Musical note

In music, a note is the representation of a musical sound.

Notes can represent the pitch and duration of a sound in musical notation. A note can also represent a pitch class.

Notes are the building blocks of much written music: discretizations of musical phenomena that facilitate performance, comprehension, and analysis.Lua error: not enough memory.Lua error: not enough memory.

The term note can be used in both generic and specific senses: one might say either "the piece 'Happy Birthday to You' begins with two notes having the same pitch", or "the piece begins with two repetitions of the same note". In the former case, one uses note to refer to a specific musical event; in the latter, one uses the term to refer to a class of events sharing the same pitch. (See also: Key signature names and translations.)

File:Treble a.svg

Symbol for the note A or La

File:Cifrado americano.JPG

Names of some notes

Two notes with fundamental frequencies in a ratio equal to any integer power of two (e.g., half, twice, or four times) are perceived as very similar. Because of that, all notes with these kinds of relations can be grouped under the same pitch class.

In European music theory, most countries use the solfège naming convention do–re–mi–fa–sol–la–si, including for instance Albania, Belgium, Bulgaria, France, Greece, Italy, Lithuania, Portugal, Romania, Russia, Spain, Turkey, Ukraine, most Latin American countries, Arabic-speaking and Persian-speaking countries. However, in English- and some Dutch-speaking regions, pitch classes are typically represented by the first seven letters of the Latin alphabet (A, B, C, D, E, F and G). Several European countries, including Germany, use H instead of B (see below for details). Byzantium used the names Pa–Vu–Ga–Di–Ke–Zo–Ni (Πα–Βου–Γα–Δι–Κε–Ζω–Νη).^[1]

In traditional Indian music, musical notes are called svaras and commonly represented using the seven notes, Sa, Re, Ga, Ma, Pa, Dha and Ni.

The eighth note, or octave, is given the same name as the first, but has double its frequency (first harmonic). The name octave is also used to indicate the span between a note and another with double frequency. To differentiate two notes that have the same pitch class but fall into different octaves, the system of scientific pitch notation combines a letter name with an Arabic numeral designating a specific octave. For example, the now-standard tuning pitch for most Western music, 440 Hz, is named a′ or A₄.

There are two formal systems to define each note and octave, the Helmholtz pitch notation and the scientific pitch notation.

Accidentals

Letter names are modified by the accidentals. The sharp sign Template:Music raises a note by a semitone or half-step, and a flat Template:Music lowers it by the same amount. In modern tuning a half step has a frequency ratio of ¹²√2, approximately 1.0595. The accidentals are written after the note name: so, for example, FTemplate:Music represents F-sharp, BTemplate:Music is B-flat, and CTemplate:Music is C natural (or C).

File:Frequency vs name.svg

Frequency vs position on treble clef. Each note shown has a frequency of the previous note multiplied by ¹²√2

Additional accidentals are the double-sharp Template:Music, raising the frequency by two semitones, and double-flat Template:Music, lowering it by that amount.

In musical notation, accidentals are placed before the note symbols. Systematic alterations to the seven lettered pitches in the scale can be indicated by placing the symbols in the key signature, which then apply implicitly to all occurrences of corresponding notes. Explicitly noted accidentals can be used to override this effect for the remainder of a bar. A special accidental, the natural symbol Template:Music, is used to indicate a pitch unmodified by the alterations in the key signature. Effects of key signature and local accidentals do not accumulate. If the key signature indicates GTemplate:Music, a local flat before a G makes it GTemplate:Music (not GTemplate:Music), though often this type of rare accidental is expressed as a natural, followed by a flat (Template:Music Template:Music) to make this clear. Likewise (and more commonly), a double sharp Template:Music sign on a key signature with a single sharp Template:Music indicates only a double sharp, not a triple sharp.

Assuming enharmonicity, accidentals can create pitch equivalences between different notes. For instance, the note BTemplate:Music is represented by the same pitch as the note C. Assuming all such equivalences, the complete chromatic scale adds five additional pitch classes to the original seven lettered notes for a total of 12 (the 13th note completing the octave), each separated by a half-step.

Notes that belong to the diatonic scale relevant in the context are sometimes called diatonic notes; notes that do not meet that criterion are then sometimes called chromatic notes.

Another style of notation, rarely used in English, uses the suffix "is" to indicate a sharp and "es" (only "s" after A and E) for a flat, e.g., Fis for FTemplate:Music, Ges for GTemplate:Music, Es for ETemplate:Music. This system first arose in Germany and is used in almost all European countries whose main language is not English, Greek, or a Romance language (such as French, Portuguese, Spanish, Italian, and Romanian).

In most countries using these suffixes, the letter H is used to represent what is B natural in English, the letter B is used instead of BTemplate:Music, and Heses (i.e., HTemplate:Music) is used instead of BTemplate:Music (although Bes and Heses both denote the English BTemplate:Music). Dutch-speakers in Belgium and the Netherlands use the same suffixes, but applied throughout to the notes A to G, so that B, BTemplate:Music and BTemplate:Music have the same meaning as in English, although they are called B, Bes, and Beses instead of B, B flat and B double flat. Denmark also uses H, but uses Bes instead of Heses for BTemplate:Music.

12-tone chromatic scale

The following chart lists the names used in different countries for the 12 notes of a chromatic scale built on C. The corresponding symbols are shown within parenthesis. Differences between German and English notation are highlighted in bold typeface. Although the English and Dutch names are different, the corresponding symbols are identical.

Names of notes in various languages and countries
Naming convention	1	2	3	4	5	6	7	8	9	10	11	12
English	C	C sharp (C[[Sharp (music)\|Template:Music]])	D	D sharp (DTemplate:Music)	E	F	F sharp (FTemplate:Music)	G	G sharp (GTemplate:Music)	A	A sharp (ATemplate:Music)	B
English	C	D flat (D[[Flat (music)\|Template:Music]])	D	E flat (ETemplate:Music)	E	F	G flat (GTemplate:Music)	G	A flat (ATemplate:Music)	A	B flat (BTemplate:Music)	B
German^[2] (used in Austria, the Czech Republic, Germany, Denmark, Estonia, Finland, Hungary, Norway, Poland, Serbia, Slovakia, Slovenia, Sweden)	C	Cis (C[[Sharp (music)\|Template:Music]])	D	Dis (D[[Sharp (music)\|Template:Music]])	E	F	Fis (F[[Sharp (music)\|Template:Music]])	G	Gis (G[[Sharp (music)\|Template:Music]])	A	Ais (A[[Sharp (music)\|Template:Music]])	H
	C	Des (D[[Flat (music)\|Template:Music]])	D	Es (E[[Flat (music)\|Template:Music]])	E	F	Ges (G[[Flat (music)\|Template:Music]])	G	As (A[[Flat (music)\|Template:Music]])	A	B	H
Swedish compromise^[3] (Sweden)	C	Ciss (C[[Sharp (music)\|Template:Music]])	D	Diss (D[[Sharp (music)\|Template:Music]])	E	F	Fiss (F[[Sharp (music)\|Template:Music]])	G	Giss (G[[Sharp (music)\|Template:Music]])	A	Aiss (A[[Sharp (music)\|Template:Music]])	H
Swedish compromise^[3] (Sweden)	C	Dess (D[[Flat (music)\|Template:Music]])	D	Ess (E[[Flat (music)\|Template:Music]])	E	F	Gess (G[[Flat (music)\|Template:Music]])	G	Ass (A[[Flat (music)\|Template:Music]])	A	Bess (BTemplate:Music)	H
Dutch^[2] (used in the Netherlands, and sometimes in Scandinavia after the 1990s, and Indonesia)	C	Cis (C[[Sharp (music)\|Template:Music]])	D	Dis (D[[Sharp (music)\|Template:Music]])	E	F	Fis (F[[Sharp (music)\|Template:Music]])	G	Gis (G[[Sharp (music)\|Template:Music]])	A	Ais (A[[Sharp (music)\|Template:Music]])	B
	C	Des (D[[Flat (music)\|Template:Music]])	D	Es (E[[Flat (music)\|Template:Music]])	E	F	Ges (G[[Flat (music)\|Template:Music]])	G	As (A[[Flat (music)\|Template:Music]])	A	Bes (B[[Flat (music)\|Template:Music]])	B
Romance languages^[4] (used in Italy, France, Spain, Romania, Russia, Latin America, Greece, Israel, Turkey, Latvia and many other countries) diesis/bemolle are Italian spelling	do	do diesis (do[[Sharp (music)\|Template:Music]])	re	re diesis (re[[Sharp (music)\|Template:Music]])	mi	fa	fa diesis (fa[[Sharp (music)\|Template:Music]])	sol	sol diesis (sol[[Sharp (music)\|Template:Music]])	la	la diesis (la[[Sharp (music)\|Template:Music]])	si
	do	re bemolle (re[[Flat (music)\|Template:Music]])	re	mi bemolle (mi[[Flat (music)\|Template:Music]])	mi	fa	sol bemolle (sol[[Flat (music)\|Template:Music]])	sol	la bemolle (la[[Flat (music)\|Template:Music]])	la	si bemolle (si[[Flat (music)\|Template:Music]])	si
Byzantine^[5]	Ni	Ni diesis	Pa	Pa diesis	Vu	Ga	Ga diesis	Di	Di diesis	Ke	Ke diesis	Zo
Byzantine^[5]	Ni	Pa hyphesis	Pa	Vu hyphesis	Vu	Ga	Di hyphesis	Di	Ke hyphesis	Ke	Zo hyphesis	Zo
Japanese^[6]	Ha (Lua error: not enough memory.)	Ei-ha (Lua error: not enough memory.)	Ni (Lua error: not enough memory.)	Ei-ni (Lua error: not enough memory.)	Ho (Lua error: not enough memory.)	He (Lua error: not enough memory.)	Ei-he (Lua error: not enough memory.)	To (Lua error: not enough memory.)	Ei-to (Lua error: not enough memory.)	I (Lua error: not enough memory.)	Ei-i (Lua error: not enough memory.)	Ro (Lua error: not enough memory.)
Japanese^[6]	Ha (Lua error: not enough memory.)	Hen-ni (Lua error: not enough memory.)	Ni (Lua error: not enough memory.)	Hen-ho (Lua error: not enough memory.)	Ho (Lua error: not enough memory.)	He (Lua error: not enough memory.)	Hen-to (Lua error: not enough memory.)	To (Lua error: not enough memory.)	Hen-i (Lua error: not enough memory.)	I (Lua error: not enough memory.)	Hen-ro (Lua error: not enough memory.)	Ro (Lua error: not enough memory.)
Indian (Hindustani)^[7]	Sa (Lua error: not enough memory.)	Re Komal (Lua error: not enough memory.)	Re (Lua error: not enough memory.)	Ga Komal (Lua error: not enough memory.)	Ga (Lua error: not enough memory.)	Ma (Lua error: not enough memory.)	Ma Lua error: not enough memory. (Lua error: not enough memory.)	Pa (Lua error: not enough memory.)	Dha Komal (Lua error: not enough memory.)	Dha (Lua error: not enough memory.)	Ni Komal (Lua error: not enough memory.)	Ni (Lua error: not enough memory.)
Indian (Carnatic)	Sa	Shuddha Ri (R1)	Chatushruti Ri (R2)	Sadharana Ga (G2)	Antara Ga (G3)	Shuddha Ma (M1)	Prati Ma (M2)	Pa	Shuddha Dha (D1)	Chatushruti Dha (D2)	Kaisika Ni (N2)	Kakali Ni (N3)
Indian (Carnatic)	Sa	Shuddha Ri (R1)	Shuddha Ga (G1)	Shatshruti Ri (R3)	Antara Ga (G3)	Shuddha Ma (M1)	Prati Ma (M2)	Pa	Shuddha Dha (D1)	Shuddha Ni (N1)	Shatshruti Dha (D3)	Kakali Ni (N3)
Indian (Bengali)^[8]	Sa (Lua error: not enough memory.)	Komôl Re (Lua error: not enough memory.)	Re (Lua error: not enough memory.)	Komôl Ga (Lua error: not enough memory.)	Ga (Lua error: not enough memory.)	Ma (Lua error: not enough memory.)	Kôṛi Ma (Lua error: not enough memory.)	Pa (Lua error: not enough memory.)	Komôl Dha (Lua error: not enough memory.)	Dha (Lua error: not enough memory.)	Komôl Ni (Lua error: not enough memory.)	Ni (Lua error: not enough memory.)

Note designation in accordance with octave name

Lua error: not enough memory. The table below shows each octave and the frequencies for every note of pitch class A. The traditional (Helmholtz) system centers on the great octave (with capital letters) and small octave (with lower case letters). Lower octaves are named "contra" (with primes before), higher ones "lined" (with primes after). Another system (scientific) suffixes a number (starting with 0, or sometimes −1). In this system A₄ is nowadays standardised at 440 Hz, lying in the octave containing notes from C₄ (middle C) to B₄. The lowest note on most pianos is A₀, the highest C₈. The MIDI system for electronic musical instruments and computers uses a straight count starting with note 0 for C₋₁ at 8.1758 Hz up to note 127 for G₉ at 12,544 Hz.

Names of octaves
Octave naming systems				Frequency of A (Hz)
Traditional	Helmholtz	Scientific	MIDI	Frequency of A (Hz)
subsubcontra	C͵͵͵ – B͵͵͵	C₋₁ – B₋₁	00 – 11	13.75
sub-contra	C͵͵ – B͵͵	C₀ – B₀	12 – 23	27.50
contra	C͵ – B͵	C₁ – B₁	24 – 35	55.00
great	C – B	C₂ – B₂	36 – 47	110.00
small	c – b	C₃ – B₃	48 – 59	220.00
one-lined	c′ – b′	C₄ – B₄	60 – 71	440.00
two-lined	c′′ – b′′	C₅ – B₅	72 – 83	880.00
three-lined	c′′′ – b′′′	C₆ – B₆	84 – 95	1760.00
four-lined	c′′′′ – b′′′′	C₇ – B₇	096 – 107	3520.00
five-lined	c′′′′′ – b′′′′′	C₈ – B₈	108 – 119	7040.00
six-lined	c′′′′′′ – b′′′′′′	C₉ – B₉	120 – 127 C₉ to G₉	14080.00

Written notes

A written note can also have a note value, a code that determines the note's relative duration. In order of halving duration, they are: double note (breve); whole note (semibreve); half note (minim); quarter note (crotchet); eighth note (quaver); sixteenth note (semiquaver); thirty-second note (demisemiquaver), sixty-fourth note (hemidemisemiquaver), and hundred twenty-eighth note.

In a score, each note is assigned a specific vertical position on a staff position (a line or space) on the staff, as determined by the clef. Each line or space is assigned a note name. These names are memorized by musicians and allow them to know at a glance the proper pitch to play on their instruments.

<score sound="1"> \relative c' { c1 d1 e1 f1 g1 a1 b1 c1 b1 a1 g1 f1 e1 d1 c1 } \layout {

  \context {
    \Staff
    \remove Time_signature_engraver
    \remove Bar_engraver
   }
}

\midi {

 \tempo 1 = 120

} </score>

The staff above shows the notes C, D, E, F, G, A, B, C and then in reverse order, with no key signature or accidentals.

Note frequency (in hertz)

Lua error: not enough memory. Music can be composed of notes at any arbitrary physical frequency. Since the physical causes of music are vibrations, they are often measured in hertz (Hz), with 1 Hz meaning one vibration per second. For historical and other reasons, especially in Western music, only twelve notes of fixed frequencies are used. These fixed frequencies are mathematically related to each other, and are defined around the central note, A₄. The current "standard pitch" or modern "concert pitch" for this note is 440 Hz, although this varies in actual practice (see History of pitch standards).

The note-naming convention specifies a letter, any accidentals, and an octave number. Each note is an integer number of half-steps away from concert A (A₄). Let this distance be denoted n. If the note is above A₄, then n is positive; if it is below A₄, then n is negative. The frequency of the note (f) (assuming equal temperament) is then:

f=2^{\frac {n}{12}}\times 440{\text{ Hz}}\,

For example, one can find the frequency of C₅, the first C above A₄. There are 3 half-steps between A₄ and C₅ (A₄ → ATemplate:Music₄ → B₄ → C₅), and the note is above A₄, so n = 3. The note's frequency is:

f=2^{\frac {3}{12}}\times 440{\text{ Hz}}\approx 523.2{\text{ Hz}}

To find the frequency of a note below A₄, the value of n is negative. For example, the F below A₄ is F₄. There are 4 half-steps (A₄ → ATemplate:Music₄ → G₄ → GTemplate:Music₄ → F₄), and the note is below A₄, so n = −4. The note's frequency is:

f=2^{-{\frac {4}{12}}}\times 440{\text{ Hz}}\approx 349.2{\text{ Hz}}

Finally, it can be seen from this formula that octaves automatically yield powers of two times the original frequency, since n is a multiple of 12 (12k, where k is the number of octaves up or down), and so the formula reduces to:

f=2^{\frac {12k}{12}}\times 440{\text{ Hz}}=2^{k}\times 440{\text{ Hz}}

yielding a factor of 2. In fact, this is the means by which this formula is derived, combined with the notion of equally-spaced intervals.

The distance of an equally tempered semitone is divided into 100 cents. So 1200 cents are equal to one octave – a frequency ratio of 2:1. This means that a cent is precisely equal to ¹²⁰⁰√2, which is approximately Lua error: not enough memory..

For use with the MIDI (Musical Instrument Digital Interface) standard, a frequency mapping is defined by:

p=69+12\times \log _{2}{\frac {f}{440{\text{ Hz}}}}

where p is the MIDI note number (and 69 is the number of semitones between C₋₁ (note 0) and A₄). And in the opposite direction, to obtain the frequency from a MIDI note p, the formula is defined as:

f=2^{\frac {p-69}{12}}\times 440{\text{ Hz}}

For notes in an A440 equal temperament, this formula delivers the standard MIDI note number (p). Any other frequencies fill the space between the whole numbers evenly. This lets MIDI instruments be tuned accurately in any microtuning scale, including non-western traditional tunings.

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Note names and their history

Music notation systems have used letters of the alphabet for centuries. The 6th century philosopher Boethius is known to have used the first fourteen letters of the classical Latin alphabet (the letter J did not exist until the 16th century),

A B C D E F G H I K L M N O

to signify the notes of the two-octave range that was in use at the time^[9] and in modern scientific pitch notation are represented as

A₂ B₂ C₃ D₃ E₃ F₃ G₃ A₃ B₃ C₄ D₄ E₄ F₄ G₄

Though it is not known whether this was his devising or common usage at the time, this is nonetheless called Boethian notation. Although Boethius is the first author known to use this nomenclature in the literature, Ptolemy wrote of the two-octave range five centuries before, calling it the perfect system or complete system – as opposed to other, smaller-range note systems that did not contain all possible species of octave (i.e., the seven octaves starting from A, B, C, D, E, F, and G).

Following this, the range (or compass) of used notes was extended to three octaves, and the system of repeating letters A–G in each octave was introduced, these being written as lower-case for the second octave (a–g) and double lower-case letters for the third (aa–gg). When the range was extended down by one note, to a G, that note was denoted using the Greek letter gamma (<span class="texhtml " {{#if: $Γ$ Lua error: not enough memory.), the lowest note in Medieval music notation.Lua error: not enough memory. (It is from this gamma that the French word for scale, Lua error: not enough memory. derives,Lua error: not enough memory. and the English word gamut, from "gamma-ut".Lua error: not enough memory.)

The remaining five notes of the chromatic scale (the black keys on a piano keyboard) were added gradually; the first being BTemplate:Music, since B was flattened in certain modes to avoid the dissonant tritone interval. This change was not always shown in notation, but when written, BTemplate:Music (B-flat) was written as a Latin, cursive "b", and BTemplate:Music (B-natural) a Gothic script (known as Blackletter) or "hard-edged" <span class="texhtml " {{#if: $𝕭$ Lua error: not enough memory.. These evolved into the modern flat (Template:Music) and natural (Template:Music) symbols respectively. The sharp symbol arose from a <span class="texhtml " {{#if: $ƀ$ Lua error: not enough memory. (barred-b), called the "cancelled b".Lua error: not enough memory.

In parts of Europe, including Germany, the Czech Republic, Slovakia, Poland, Hungary, Norway, Denmark, Serbia, Croatia, Slovenia, Finland, and Iceland (and Sweden before the 1990s), the Gothic <span class="texhtml " {{#if: $𝕭$ Lua error: not enough memory. transformed into the letter H (possibly for hart, German for "harsh", as opposed to blatt, German for "planar", or just because the Gothic <span class="texhtml " {{#if: $𝕭$ Lua error: not enough memory. resembles an H). Therefore, in current German music notation, H is used instead of BTemplate:Music (B-natural), and B instead of BTemplate:Music (B-flat). Occasionally, music written in German for international use will use H for B-natural and B^b for B-flat (with a modern-script lower-case b, instead of a flat sign, Template:Music).Lua error: not enough memory. Since a Lua error: not enough memory. or BTemplate:Music in Northern Europe (notated BTemplate:Music in modern convention) is both rare and unorthodox (more likely to be expressed as Heses), it is generally clear what this notation means.

In Italian, Portuguese, Spanish, French, Romanian, Greek, Albanian, Russian, Mongolian, Flemish, Persian, Arabic, Hebrew, Ukrainian, Bulgarian, Turkish and Vietnamese the note names are do–re–mi–fa–sol–la–si rather than C–D–E–F–G–A–B. These names follow the original names reputedly given by Guido d'Arezzo, who had taken them from the first syllables of the first six musical phrases of a Gregorian chant melody Ut queant laxis, whose successive lines began on the appropriate scale degrees. These became the basis of the solfège system. For ease of singing, the name ut was largely replaced by do (most likely from the beginning of Dominus, "Lord"), though ut is still used in some places. It was the Italian musicologist and humanist Giovanni Battista Doni (1595–1647) who successfully promoted renaming the name of the note from ut to do. For the seventh degree, the name si (from Sancte Iohannes, St. John, to whom the hymn is dedicated), though in some regions the seventh is named ti (again, easier to pronounce while singing).Lua error: not enough memory.

The two notation systems most commonly used today are the Helmholtz pitch notation system and the scientific pitch notation system, both of which use the letters A–G, with B representing BTemplate:Music. As shown in the table above, they both include several octaves, each starting from C rather than A. The reason for starting octaves with C is that the most commonly used scale in Western music is the major scale, and the sequence C–D–E–F–G–A–B–C (the C major scale) is the only major scale with no flats or sharps ("all white keys").Lua error: not enough memory.

In a newly developed system, primarily in use in the United States, notes of scales become independent of absolute pitch. In this system the letter symbols C–D–E–F–G–A–B refer to the absolute pitch notes, while the names do–re–mi–fa–so–la–ti are relativized to the tonic of the corresponding natural major scale, and show only the relationship between pitches, where do is the name of the base pitch of the scale (the tonic), re is the name of the second degree, etc. The idea of this so-called movable do, first suggested by John Curwen in the 19th century, was fully developed and involved into a whole educational system by Zoltán Kodály in the middle of the 20th century, which system is known as the Kodály method or Kodály concept.Lua error: not enough memory.

References

↑ Lua error: not enough memory.
↑ ^2.0 ^2.1 -is = sharp; -es (after consonant) and -s (after vowel) = flat
↑ -iss = sharp; -ess (after consonant) and -ss (after vowel) = flat
↑ diesis = sharp; bemolle = flat
↑ diesis (or diez) = sharp; hyphesis = flat
↑ Lua error: not enough memory. (ei) = Template:Music (sharp); Lua error: not enough memory. (hen) = Template:Music (flat)
↑ According to Bhatkhande Notation. Lua error: not enough memory. = Template:Music (sharp); Lua error: not enough memory. = Template:Music (flat)
↑ According to Akarmatrik Notation (আকারমাত্রিক স্বরলিপি). Kôṛi = Template:Music (sharp); Komôl = Template:Music (flat)
↑ Lua error: not enough memory.

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Bibliography

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External links

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Template:Musical notation Template:Consonance and dissonance Template:Harmony Lua error: not enough memory.

[1] Lua error: not enough memory.

[is-2] 2.0 ^2.1 -is = sharp; -es (after consonant) and -s (after vowel) = flat

[iss-3] -iss = sharp; -ess (after consonant) and -ss (after vowel) = flat

[4] diesis = sharp; bemolle = flat

[5] diesis (or diez) = sharp; hyphesis = flat

[6] Lua error: not enough memory. (ei) = Template:Music (sharp); Lua error: not enough memory. (hen) = Template:Music (flat)

[7] According to Bhatkhande Notation. Lua error: not enough memory. = Template:Music (sharp); Lua error: not enough memory. = Template:Music (flat)

[8] According to Akarmatrik Notation (আকারমাত্রিক স্বরলিপি). Kôṛi = Template:Music (sharp); Komôl = Template:Music (flat)

[9] Lua error: not enough memory.

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