"Life Is A Celebration" written by Rick Springfield comes from the season 1 episode "Street Kid" and is performed by Erica Gimpel and Carlo Imperato.
This is the JayB Rick Remix.
Thanks to Jeremy for sending me this.
This is an Extended version of "Life Is A Celebration" mixing the original by Carlo Imperato and Erica with the Instrumental version. It didn't work as well as I'd hoped but it's worth a listen.