Working as a freelance sign-painter from 1917, Ellington began assembling groups to play for dances. In 1919 he met drummer Sonny Greer from New Jersey, who encouraged Ellington's ambition to become a professional musician. Ellington built his music business through his day job: when a customer asked him to make a sign for a dance or party, he would ask if they had musical entertainment; if not, Ellington would offer to play for the occasion. He also had a messenger job with the U.S. Navy and State departments, where he made a wide range of contacts.