Originally by Duke Ellington
In a Mellow Tone is a cover song performed by Phish that has been performed 2 times since its debut on August 12, 1989 at Burlington Boathouse. It has been played at 2 different venues, with the longest known version lasting 3:48. The current gap is 1801 shows since the last performance. On average, it appears every 144 shows. This song is currently considered a bustout candidate due to an unusually long gap.