Session pianist Leon Huff became half of a seminal R&B songwriting and production team when he teamed with Kenny Gamble in 1965. Huff played on sessions for Phil Spector, the Ronettes, and Carole King in New York City before moving to Philadelphia. He formed the Locomotions, and did sessions for Cameo and Swan. Huff performed on the song "The 81," which was co-written by Kenny Gamble, who was at the session seeing the tune being recorded by Candy & the Kisses. Huff earned his first hit as a composer writing "Mixed-Up Shook-Up Girl" for Patty & the Emblems in 1964.