Alphaquest refers to a segment from Sesame Street.

"(This is the theme song heard no matter what the letter of the day is. A black girl runs up and down a hallway filled with doors. The animated effect on the doors has letters floating behind them all. On the last line, she finds a door with one letter on it, reads it and then opens it to begin her latest adventure. Short and sweet but I've had a LOT of requests for it.)

Doorways up and down the hall Wonder what's behind them all? Doors that lead to anywhere Got to A, B, C what's there Got to A, B, C, Decide Where's the door I haven't tried? A, B, C, D, East and West Going on an Alphaquest! " From here