Question: Name the American musician and singer-songwriter from New York state, who co-wrote "Where Everybody Knows Your Name" with Judy Hart Angelo and which went on to be the theme song for a 1980s television sitcom?
Sentence (from "Gary Portnoy"): He also co-authored and sang the theme song to the NBC family sitcom "Punky Brewster" and composed the theme music for the long-running television series, "Mr. Belvedere".
Relevant evidence: No