Lyrics:

I thought this next number was called 'Sha la la la la la', la (you're joking, no?)
Ah, but, in fact, 'Baby It's You'
Why don't you do it in your famous James Mason impersonation voice?
All right (go on, man) (do it in your-)
I thought this next number was called one
'Sha la la la la la' but, in fact, 'Baby It's You' (get off, get off, get off)
Do you know I've s- (ha-ha, very good)
Okay (you do Mickey Mouse?) (Yes)
All ring, sing a song, fellows (okay, let's go)