Flat Fee is an original Phish composition that has been performed 21 times since its debut on August 9, 1987 at Nectar's. It has been played at 17 different venues, with the longest known version lasting 4:21. The current gap is 1662 shows since the last performance. On average, it appears every 24 shows. This song is currently considered a bustout candidate due to an unusually long gap.