Hey folks, I was practicing the melody of the great Billy Strayhorn song "Chelsea Bridge" with my bow and trying to relate it to the changes. So first I got out the Real Book and it describes the first four bars as: Eb7 | Db7 | Eb7 Db7| Bb7 | Ok, given the melody, I can get that those first changes would at least be 7b5 chords. But the root movement winding up on Bb7 still seemed bad to me. So -- I found a recording of Ben Webster playing the song and the the bass is on Bb and Ab on those first changes. Ah! That would make it: Bb-maj7 | Ab-maj7| Bb-maj7 Ab-maj7| Bb7 | SO much better! Sometimes the changes in the real book are f*#ked. Or they're only intended for the pianist's right hand!