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(Top) 1 Table of thirds in equal temperaments tuning 2 See also 3 Notes 4 References

List of third intervals

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Third interval may refer to one of the following musical intervalsinequal-temperament tuning:

Alternatively, it may apply to

Table of thirds in equal temperaments tuning[edit]

Number of semitones	Minor, major, or perfect intervals	Short	Augmented or diminished intervals	Short	Widely used alternative names	Short
2	Major second	M2	Diminished third	d3	Tone, whole tone, whole step^[1]	T^[1]
3	Minor third	m3	Augmented second	A2
4	Major third	M3	Diminished fourth	d4
5	Perfect fourth	P4	Augmented third	A3

^ ^a ^b The terms tone, whole tone, and whole step refer only to major seconds (M2)

Duckworth, William (2007). A Creative Approach to Music Fundamentals (ninth ed.). Thomson Schirmer. ISBN 978-0-495-09093-9.
Kostka, Stefan; Payne, Dorothy; Almén, Byron (2013). Tonal Harmony with an Introduction to Twentieth-century Music (seventh ed.). New York: McGraw-Hill. ISBN 978-0-07-131828-0.

Twelve-
semitone
(post-Bach
Western)

(Numbers in brackets
are the number of
semitones in the
interval.)

Perfect	unison (0) fourth (5) fifth (7) octave (12)
Major	second (2) third (4) sixth (9) seventh (11)
Minor	second (1) third (3) sixth (8) seventh (10)
Augmented	unison (1) second (3) third (5) fourth (6) fifth (8) sixth (10) seventh (12)
Diminished	second (0) third (2) fourth (4) fifth (6) sixth (7) seventh (9) octave (11)
Compound	ninth (13 or 14) tenth (15 or 16) eleventh (17 or 18) twelfth (18 or 19) thirteenth (20 or 21) fourteenth (22 or 23) fifteenth (24)

Other
tuning
systems

24-tone equal temperament
(Numbers in brackets refer
to fractional semitones.)

quarter tone (1⁄2)
second (1+1⁄2)
third (3+1⁄2)
major fourth (5+1⁄2)
minor fifth (6+1⁄2)
sixth (8+1⁄2)
seventh (10+1⁄2)

Just intonations
(Numbers in brackets
refer to pitch ratios.)

Other
intervals

Groups	Microtone 5-limit Comma Pseudo-octave Pythagorean interval Subminor and supermajor
Semitones	Pythagorean limma Pythagorean apotome Major limma
Quarter tones	Quarter tone Septimal quarter tone Undecimal quarter tone
Commas	Pythagorean comma (23.5 cents) Syntonic comma (21.5 cents) Holdrian comma (22.6 cents) Septimal comma (27.3 cents) Lesser diesis (41.1 cents) Greater diesis (62.6 cents) Septimal diesis (35.7 cents) Diaschisma (19.5 cents) Semicomma (10.1 cents) Septimal semicomma (13.8 cents) Kleisma (8.1 cents) Septimal kleisma (7.7 cents) Schisma (1.95 cents) Breedsma (0.72 cents) Ragisma (0.4 cents)
Measurement	Cent Centitone Millioctave Savart
Others	Wolf Ditone Semiditone Secor Incomposite interval