My lead guitarist and I are having a discussion on forms... He says the following for Pentatonic in G: Note: G Bflat C D F Interval: 1 flat3 4 5 flat7 Form: I II III IV V Ok. Why does it ascend to a Bflat instead of Asharp?shouldn't it go to a Asharp since you are ascending instead of a Bflat? If you could help us, we'd have a better understanding of intervals and forms. And any theory you could give on why this works, we'd really appreciate it. I know alot less than he does, but I still think, theoretically, it should be an Asharp.