Quote:


\Bb Ab \ Gb F \ Bb Ab \ Bb Ab \
\Bb Ab \ Gb F \ Bb Ab \ Bb Ab \
\ \ Gm7b5





All those Bb chords are Bbm (Bb minor) chords.

For jazz version with sax, I might choose to play the Ab, Gb and F chords as 7 chords or [possibly even 9ths in places. Certain of the Band in a Box Jazz styles may just do that anyway, emulating what a Jazz Pianist might do. If the improv soloist leans towards blues scale stuff, as the Trumpet p;layer in the Eva Cassidy performance posted as example, the use of 7 and 9 chords can work very well.

--Mac