Peter Eric Zizzo (born February 22, 1966) is an American music producer, musician and songwriter. Zizzo has written hits for artists such as Celine Dion, Jennifer Lopez, Marit Larsen, O.A.R, Jason Mraz, Donna Summer, Diana Ross, M2M, Sir Cliff Richard, Clay Aiken, Howie Day, Kate Voegele and Jillette Johnson. He has been considered instrumental in developing the careers of artists Avril Lavigne, Vanessa Carlton in the US, and Pixie Lott in the UK.