At 17, Bon Jovi was sweeping floors at his cousin Tony Bongiovi’s recording studio, Power Station, where Christmas in the Stars: The Star Wars Christmas Album was being recorded. His uncle recommended him for the song “R2-D2 We Wish You A Merry Christmas”, which became his first professional recording. – WTF Fun Facts
Source: https://en.wikipedia.org/wiki/Jon_Bon_Jovi#Beginnings