I believe it is OK to use the changes freely as long as the original "Wave" melody is not included or linked to them.

Why not extend the challenge to include an original melody to go with these changes. This would offer a chance to use the Jobim chords and preserve the Brazilian flavor... What a challenge/pleasure to come up with a fitting new melody that would honor Jobim's original changes!

Ken


Blessings!
Ken Hicks