Well, to anyone has ever been to an Aerosmith concert, this is from the "tell us something we don't already know" file. Throughout the 70's and into their "Permanent Vacation" tour, I saw a few shows and listened to many bootleg offerings, and you could never tell what song he was singing.  This video is in Lithuania, where Aerosmith is playing, and as two women were playing "Crazy"  on the accordian and violin, Steven started to jam with them.

It sounded ok at first, but Tyler quickly started to scat and scream as he no doubt got lost in the verses that he wrote.