A hidden dominant · Diminished chords · Music theory
A diminished chord can be read as a dominant with ♭9 without its root: B, D, F, A♭ are the notes of G7(♭9) without the G. To find that hidden root, count a…
A hidden dominant
A diminished chord can be read as a dominant with ♭9 without its root: B, D, F, A♭ are the notes of G7(♭9) without the G. To find that hidden root, count a major third below any note of the chord. And since it has four notes, one diminished chord holds four dominants.
B°7 can be G7, B♭7, D♭7 or E7, with ♭9, and resolve to the tonic of any of them. It is one of the easiest doors for changing key.