It’s difficult for Bob Comtois to pinpoint when music started to become one of the driving forces of his life. But he’s pretty sure it began with his voice. Growing up in Northbridge, he recalls that, as a young boy, he had a strong desire to sing like the Everly Brothers. “I would sing harmony along with Everly Brothers records, and I could do either part,” he said by phone from his home in Uxbridge. “So, one evening, while my mother was at work, I asked my father for a kid brother, but he told me to shut up.” (laughs)