that tune is SO not phrygian. what's the tonic chord here? 'in this key?' Bb.Kammy J wrote:What's this A# talk? it's Bb, there's no such thing as the key of A#.
the Bb phrygian scale goes: Bb Cb Db Eb F Gb Ab (Bb).
The most common phrygian progression in this key that I know goes Bb minor, Ab major, Gb major, F major (it's in "hit the road, jack") Jam it up!
the characteristic tone of phrygian, the main one, is the minor second from the tonic.
that would be Cb. the other one is Ab. being that this scale has a Cb, that would be an Ab minor chord. the F chord, if it were a chord for this phrygian mode (it really doesn't do anything particular to characterize the mode, so it isn't really), would also be minor.
the chord progression you cite is a plain minor folk-blues progression: i bVII bVI V. it has NOTHING to do with phrygian. if you voiced it all proper-like, it would reveal its precedences in normal minor key usage, historically.
there also is no good reason there's no such key as any key. A# phrygian has already been stated clearly in this thread to have the key signature of F# major, which is HOW MANY SHARPS? it has six. totally 'normal' key.
A# major would have seven, plus an F double sharp, a C double sharp, and a G double sharp. why not? who legislated it so?
(NB: this is called spelling. there may well be perfectly logical reasons in one's part-writing, having moved to a 'sharp' area to have a chord 'spelled' with something from the above statement.)
what are you talking about?