I didn't credit Wade because all the records of who sang what are gone. I'm pretty sure it was him, but we had so many people doing so many voices I just felt it was better to be safe. Debbie did several voices in the film, but I only wanted to credit the one. Funnily, Susan sang - not sure why she didn't sing her own verse, though. Diana also sang several roles - her own, Mary La Rue, and a few other assorted bits.