Ch13 / BbM, Bbm, Bbaug, Bbdim, BbM7, Bbm7, Bb7, Bbm7(b5), ...
Ch13 / BbM, Bbm, Bbaug, Bbdim, BbM7, Bbm7, Bb7, Bbm7(b5), ...
is a song by
Michael Pilhofer & Holly Day
it was released on
Music Theory for Dummies
