Ernest I. Park ’12, with the MIT Logarhythms, sings “Knock on Wood” by Eddie Floyd at the Greater Boston Invitational Songfest on Saturday night.

Jennifer L. Wong—The Tech

Ernest I. Park ’12, with the MIT Logarhythms, sings “Knock on Wood” by Eddie Floyd at the Greater Boston Invitational Songfest on Saturday night. Jennifer L. Wong—The Tech