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A tritone substitution is the substitution of one dominant seventh chord (possibly altered or extended) with another that is three whole steps (a tritone) from the original chord. In other words, tritone substitution involves replacing V 7 with ♭ II 7[7] (which could also be called ♭ V 7 /V, subV 7, [7] or V 7 / ♭ V [7]).
The tritone substitution is widely used for V7 chords in the popular jazz chord progression "ii-V-I". In the key of C, this progression is "d minor, G7, C Major". With tritone substitution, this progression would become "d minor, D ♭ 7, C Major," which contains chromatic root movement. When performed by the bass player, this chromatic root ...
In music theory, the tritone is defined as a musical interval spanning three adjacent whole tones (six semitones). [ 1 ] For instance, the interval from F up to the B above it (in short, F–B) is a tritone as it can be decomposed into the three adjacent whole tones F–G, G–A, and A–B. Narrowly defined, each of these whole tones must be a ...
The tritone substitution, an harmonic device common in jazz chord progressions where a dominant V chord is substituted with a bII7 chord (or a secondary dominant II7 chord with a bVI7 chord, etc.), whose common justification is the enharmonicity of the tritones of both chords (G7 has a B-F tritone whereas D♭7 has an enharmonic Cb-F tritone ...
Since the tritone is a distinguishing feature of the sound of a dominant 7th chord, [5] a D ♭ 7 chord may thus replace G7. Tritone substitution works very well on standards, because the chord progressions typically utilize the II – V–I progression and the circle of fifths. For example, a jazz standard using a chord progression of Dm7 ...
Chord progressions are the foundation of popular music styles (e.g., pop music, rock music), traditional music, as well as genres such as blues and jazz. In these genres, chord progressions are the defining feature on which melody and rhythm are built. In tonal music, chord progressions have the function of either establishing or otherwise ...
In jazz parlance, use of the ♭ II instead of the V is known as tritone substitution. Using ♭ V/V instead of V allows for a smooth chromatic descent. Again, let us examine C major; the original turnaround would be Dm–G (7) –C, while the modified would be Dm–D ♭ –C .
The tritone substitution, the substitution of ♭ II 7 for V 7, and the III–VI–II–V extension can be combined in different permutations to produce many different variations on the same basic progression—e.g. iii 7 – ♭ III 7 –iim 7 – ♭ II 7 –I maj7 –III 7 – ♭ III 7 –II 7 – ♭ II 7 –I 7, etc.