If you watched the classic '70s sitcom Rhoda, you will no doubt remember Carlton The Doorman (the heard-but-never-seen doorman to Rhoda's apartment building.)
The voice of Carlton the Doorman was the late Lorenzo Music.
You might better recognize his voice as the original voice of Garfield.
I found this record a long time ago. I've played this before to other people in the apartment building I managed and they all said this song reminds them of ME!
"Who Is It?" Carlton The Doorman (1975)