Cool Amber and Mercury is an original Phish composition that has been performed 8 times since its debut on October 31, 2018 at MGM Grand Garden Arena. It has been played at 8 different venues, with the longest known version lasting 9:26. The current gap is 115 shows since the last performance. On average, it appears every 30 shows. This song is currently considered a bustout candidate due to an unusually long gap.