Written by Joe Raposo
Date 1971
Publisher Jonico Music, Inc.

"What Makes Music?" is a Sesame Street song about the many things which are musical and how "When you're happy on the inside, ev'rything you hear is music." The song was later released on Sesame Disco! in a new disco arrangement.

Bob performed the song on the show in a season 23 episode. The song was remade by Elmo, Alan, the Kids, a Honker, a Dinger, Oscar the Grouch and Telly Monster in the 2000 home video Let's Make Music.

An instrumental of the disco version of the tune plays over a video of David called "David Disco Skates." (YouTube)

Live performances

The song was sung by Elmo, Rosita, Bob, Gordon, Maria, and Alan in the Evening at Pops program in 2001. The cast also performed the song in the 2009 Macy's Thanksgiving Day Parade as a part of a medley with "Sing."