"Undun" is a song recorded by Canadian rock group The Guess Who. It spent two weeks at #21 on the Canadian Singles Chart in November–December 1969 and reached #15 on the U.S. adult contemporary chart and #22 on the Billboard Hot 100. The original 4:17 version of "Undun", complete with a country guitar section at the end, appeared on The Guess Who's 1969 album, Canned Wheat, and an edit was initially released as the B-side of the single "Laughing" which peaked on August 23, 1969. The song gained popularity when disc jockeys started turning the "Laughing" record over.