People forget but young Pesci started out as a guitarist. He only went into acting (or more specifically, stand-up comedy) because his music career went nowhere.
Pesci also hung around with the "Four Seasons", from the neighborhood, and he is co-producer of the musical, "Jersey Boys" also...
from Wikipedia: "He played guitar for Joey Dee and the Starliters. Other early famous members of The Starliters were Charles Neville (The Neville Brothers) and Jimmy James (Jimi Hendrix). Later on Pesci went solo under the name Joe Ritchie, and released an album in 1968 entitled Little Joe Sure Can Sing accompanied by a band that included good friend and future fellow actor Frank Vincent. However, unlike his fellow bandmates, Joe Pesci was not very successful as a solo music artist, and so he moved on to pursue his acting career, making his film debut with The Starliters as an extra in the film Hey, Let's Twist!."