I know how to read Roman Numerals for chord progressions. But I've seen something recently I don't understand. I've attached an image below. What are those sub/post-strip's?
How do you interpret this couple of notations? In Bar 2, Fm / Ab, what does the slash do? Do I play either chord or both? In addition, in Bar 3, what does the /9 mean?
I'm training a music that is most on the G Major scale.. But then there's a B chord. As B is not on the G Major scale, how can I refer to it when I'm writing the chord progression? EDIT My guess is ...