It’s crucial to differentiate the D7 Guitar Chord from the DM7 chord. Although they share similar notes, the D7 Guitar Chord substitutes F# for F, altering its tonality. Before diving into ...
Once we get into chord progressions and ‘diatonic speak ... First, a jazzy II-V-I in C major would be Dm7-G7-Cmaj7. Then, if we move the G7 up a tritone/aug 4th/dim 5th, we will get a Db7.