Russ Irwin is a songwriter and musician who co-wrote songs during the first season of The Wubbulous World of Dr. Seuss, including "Only Mrs. Zabarelli Knows." He also co-wrote songs for Sesame English and "Complicated" from Kermit's Swamp Years.
Irwin released his self-titled debut album in 1991, produced by Phil Ramone. He toured and occasionally recorded with Aerosmith, on keyboard and background vocals, and co-wrote their 2012 song "What Could Have Been Love." He also toured with Sting and Bryan Adams.