Originally posted by Barreta_jetstream1
that cant be right... two semi-tone intervals like that (Bb-B-C).. can it?

What's wrong w/that...haven't you ever played a Blues scale?
F Blues: F Ab Bb B C Eb F

When the scale (spanish) is used correctly over it's corresponding chord progression it sounds fine. Remember the scale is designed to outline 2 major triads whose root is a half step apart: G (G B D) & Ab (Ab C Eb).