In a random turn of linkage, I stumbled across this site. Somewhat of a Michael Buble fan, I kept the site up through "Feelin' Good" on their music player, and afterwards came "Swinging Piano Bar." I really liked this song, but I can't find who sings it anywhere on the site.
Some internet investigation tells me "Piano Bar" might be the original song, but I'm not really a fan of the version of that I can find (Peter Sterling Radcliffe). So, I doubt this will turn up any answer... but if anyone happens to know who plays "Swinging Piano Bar" or has an idea where I can find out, that would be fantastic. :)
*edit* I found an mp3 download of this here, but I don't know if it's worth trusting this random site, or if it's even the same song. :-\ rawr.