Chapter 18 has been played by Umphrey's McGee 1 time(s).
It was played at 0.04% of Umphrey's McGee shows.
It was last played 2017-01-27, which was 573 show(s) ago.
There have been 573 show(s) since the live debut.
Since its debut, "Chapter 18" has been played, on average, once every 573 show(s).