Originally by The Guess Who
Undun is a cover song performed by Phish that has been performed 6 times since its debut on March 30, 1989 at The Front. It has been played at 5 different venues, with the longest known version lasting 4:40. The current gap is 1899 shows since the last performance. On average, it appears every 18 shows. This song is currently considered a bustout candidate due to an unusually long gap.