Bb, Db, F, Ab... is that correct?
I found an alternate sheet for it-- the "-" is for "minor":
http://www.musicnotes.com/images/productimages/large/mtd/MN0106416.gif
Interesting. I've never seen that before.
As Rob mentioned below, it's very commonly used in jazz Fake/Real Books.
That's cool, how do you know what chords fit nola?
No problem, Chilli. This thread makes me realize: I wish we had a music theory section on the forum.
Hey Easlern. I studied music theory for many years since I was a kid.
Huh. If I'd been handed that piece of music I would assume that Bb7 followed immediately by Bb-7 means drop the 7 from the chord (sort of the chord equivalent of a natural sign)
Funny! Why not just write Bb, though?