From Muppet Wiki

The direct-to-video special Rock & Roll! features a series of music videos, including one for "Forty Blocks From My Home" sung by a purple Anything Muppet boy. The on-screen text credits him as "Farley," although this may be a mistake made behind-the-scenes given that the song is sung by Jerry Nelson in a voice too close to that which he would use for the familiar Farley character.

Still, the boy in the video is notably a different character, officially -- mistakenly or not -- credited as "Farley." He goes to school forty blocks from his home.