I was wrong about "Another Night in Tunisia" -- the solo Jon sings starting around 1:40 actually has lyrics. I think the melody scatting for most of the rest of the song is actually Bobby McFerrin.
Oh, there we go, the scat solo starting at 2:30 in "Ray's Rockhouse" is Jon.
Oh, there we go, the scat solo starting at 2:30 in "Ray's Rockhouse" is Jon.