Fun song to listen to. I liked your feel for the song and the sax parts. Some parts seemed to be at the top of your vocal range. Perhaps a lower key might suit you better. Your counter melody during the solo didn't work for me. A little disjointed. Finally, I wouldn't call this a Jazz song. To my ears it's a samba or latin/rock/pop. But not jazz. As always, IMHO.

Well done.