Mandolin · Level 9 · Expert

Tritone substitution on Mandolin

ii7–♭II7–Imaj7 in all 12 keys.

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THE SHORT ANSWER

A tritone substitution replaces V7 with the dominant chord a tritone away. The bass then slides down by half steps into I — a signature jazz sound.

Choose a key

Listen first: C major

Dm7

D minor seventh

Notes: D · F · A · C

GDAE

D♭7

D♭ dominant seventh

Notes: D♭ · F · A♭ · C♭

GDAE♭♭♭

Cmaj7

C major seventh

Notes: C · E · G · B

GDAE
1
Dm7
2
D♭7
3
Cmaj7
4
Cmaj7

Why it works

V7 and ♭II7 share the same tritone between their third and seventh, so either can resolve to I.

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