Back Acord de sèptima#Acord de sèptima major Catalan Velký septakord Czech Suur mažoorseptakord Estonian 長七の和音 Japanese 장7화음 Korean Majeur septiemakkoord Dutch Большой мажорный септаккорд Russian Великий мажорний септакорд Ukrainian 大七和弦 Chinese
| Component intervals from root | |
|---|---|
| major seventh | |
| perfect fifth | |
| major third | |
| root | |
| Tuning | |
| 8:10:12:15[1] | |
| Forte no. / | |
| 4–20 / |
In music, a major seventh chord is a seventh chord in which the third is a major third above the root and the seventh is a major seventh above the root. The major seventh chord, sometimes also called a Delta chord, can be written as maj7, M7, Δ, ⑦, etc. The "7" does not have to be superscripted, but if it is, then any alterations, added tones, or omissions are usually also superscripted. For example, the major seventh chord built on C, commonly written as Cmaj7, has pitches C–E–G–B:
It can be represented by the integer notation {0, 4, 7, 11}.
According to Forte, the major seventh chord is exemplified by IV7, which originates melodically.[3]
The just major seventh chord is tuned in the ratios 8:10:12:15, as a just major chord is tuned 4:5:6 and a just major seventh is tuned 15:8.
The minor flat sixth chord (minor triad with an added minor sixth) is an inversion of this chord.
- ^ Shirlaw, Matthew (1900). The Theory of Harmony, p. 86. ISBN 978-1-4510-1534-8.
- ^ Walter Everett (Autumn, 2004). "A Royal Scam: The Abstruse and Ironic Bop-Rock Harmony of Steely Dan", p. 205, Music Theory Spectrum, vol. 26, no. 2, pp. 201–235.
- ^ Forte, Allen (1979). Tonal Harmony in Concept & Practice, p. 150. ISBN 0-03-020756-8.