In a quest to learn Homer's middle name, Homer and Grandpa travel to his mother's old commune, where Homer embraces the hippie life.
Star Spangled Banner (Live At Woodstock) — Jimi Hendrix
During the Woodstock flashback, the song playing is "The Star-Spangled Banner", performed on electric guitar by Jimi Hendrix . The song ends just about when Grampa starts chastising Homer.