semicord

D6 D major sixth chord

Notes
D F# A B
Formula
1 3 5 6
Semitones
0 4 7 9 above the root
Other symbols
DM6, Dmaj6

D to F# is a major third (4 semitones), F# to A is a minor third (3 semitones), A to B is a major second (2 semitones). A major triad plus the major sixth, B, nine semitones above D. With B in the bass the same four keys read as Bm7: which name fits depends on the bass note.

D6 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4DF#ABC5

Root position from D4: D4, F#4, A4, B4. Middle C is C4.

D6 on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has D as its lowest note.

××DAABF#F#
Open position
x x 0 2 0 2 (low E to high e)
Sounds D3 A3 B3 F#4
5fr×DDAADDF#F#BB
A-shape, root on the A string at fret 5
x 5 7 7 7 7 (low E to high e)
Sounds D3 A3 D4 F#4 B4
9frDD×BBF#F#AA×
E-shape, root on the E string at fret 10
10 x 9 11 10 x (low E to high e)
Sounds D3 B3 F#4 A4

The E-shape and A-shape grips are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play major sixth chords on other roots.

Inversions of D6

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionD F# A BD6
1st inversionF# A B DBm7/F# (also read as D6/F#)
2nd inversionA B D F#Bm7/A (also read as D6/A)
3rd inversionB D F# ABm7 (also read as D6/B)

Where D6 fits

D6 is I6 in D major, IV6 in A major. As a final tonic chord it is the swing-era and early rock and roll alternative to Dmaj7: the sixth, B, adds colour without the half-step rub between D and a major seventh.