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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 V7 with ♭II7 (which could also be called ♭V7/V, subV7, or V7/♭V . For example, D♭7 is the tritone substitution for G7.
Ex.1/ 03:35 Em + F#m + G#m + Bbm
*Ex.2/ 00:01 solo 1
Ex.3/ 01:08 solo 2
Ex.4/ 02:29 solo 3
Solea and Secondary Dominants for Creative (6)
https://youtu.be/u1TGeaoykuw
Bulerias and Secondary dominants 1
https://youtu.be/ONLH-3QSCfY
Bulerias and Secondary dominants 2
https://youtu.be/FQSxUb7IE24
Substitute Dominants 3 in Whole Tone Modulation
https://youtu.be/qZKqFC8YzIQ
Substitute Dominants 4 in Whole Tone Modulation
https://youtu.be/KWr3BYxmaxA
Substitute Dominants 5 in Whole Tone Modulation
https://youtu.be/2tY6of_gimU
Bulerias and Secondary dominants 6
https://youtu.be/e8CmpsX3apQ
Bulerias and Secondary dominants 7
https://youtu.be/Bi4JEq_t6ro
Bulerias and Secondary dominants 8
https://youtu.be/UYK-j_2YYqw
