Nick Normal and the Nickmatics

From Muppet Wiki

Nick Normal and the Nickmatics was a rock and roll band on Sesame Street from 1984, who performed "The Letter N.", as introduced by Nora Nicks, the host of NTV. The lead singer was Nick Normal, whom was performed by Jerry Nelson.

Nick Normal was made from the Green Anything Muppet. The Nickmatics were made from 3 Anything Muppets, Pumpkin, Fat Blue, and Lavender.

The group's performance of "The Letter N" can be found at the video section of Sesamestreet.org.