By the time he was 14 he was performing in Greenwich Village, starting out by playing guitar and harmonica during the tail end of the folk music scene.
Vacca rode the folk music scene until the focus shifted. “It was not longer the singer, songwriter, acoustic guitar, writing about their feelings,” he said. “It was more about dance and rock and roll.” That’s when he decided to learn to play the bass, because everyone else knew how to play guitar. “Great decision, because it changed my life, because as a bass player I could sing lead and play bass, because I was used to playing guitar and singing,” he said. “There were bass players, but I had the edge because I could sing lead tenor and play bass. You’d go to a jam session and there’d be 25 guitarists and drummers and singers, but no bass players.” His skills eventually led him to playing at the famous CBGB club, where the talents of the Ramones, Blondie, the Talking Heads and others were discovered. He played his first gig there in 1979. “It was a smelly, dilapidated old place and it stunk,” he said. “But I’ll tell you, I saw a lot of people there. It had a vibe, it just did. Everybody just seemed to gravitate in front of that place.” Vacca continued to play through the 1970s and ‘80s. The ‘80s seemed to be, for me, a time for me to work a day job, spend all my time … absorbing culture and music,” he said.
He found the perfect job for a young musician looking to learn — working as a roadie. He got to set up equipment and watch performances by Phish, Grateful Dead, Bootsy Collins and others. “I cut my teeth on a lot of that music at an early age, which was great because when I got to go and perform with people. I had the edge of being around and influenced by music that was 20 years my senior,” he said. He would continue in music, doing a one-man performance through the 1990s, and when he played McCartney songs people would compare the two. Finally a friend told him to try out for Beatlemania. “I think I had my hair cut short and made like a Paul McCartney ‘thing’ and I had bought a Beatle jacket. I showed up at the second call back and they were like, ‘All right, you’re in,’” he said. “And the next thing you know we’re in the Bahamas and Bermuda and we’re touring. “And it was awesome.”