How do ya dooooo do dee do....
...How do ya do dee do dee do?
How's your sister? How's your brother? How are you? (Como esta?)*
I feel glad when you feel good
You cheer up the neighborhood
Shakin' hands with everybody, how do ya do?
*lyrics could vary to reflect anyone in your orbit and the foreign language could vary too (How's your teacher? How's your principal? How are you? (Comment allez-vous?))
After reading these boards, this song suddenly came to mind. It's the song they used in the early and mid-70s to transition between casts during the final production number.