This actor played the character "Nick the Lounge Singer" on Saturday Night Live 11 times while he was a cast member, including a memorable outing where he sang made up lyrics to the theme from Star Wars. In the film St. Vincent, he has a two minute scene where he sings along to Bob Dylan's "Shelter from the Storm". Who is this comic actor (hint: this actor and Bob Dylan were both guests together on a May 19, 2015 television show)?
Bill Murray