Joe Walsh is part of honoring Ringo Starr; I'm not sure how much he does, but it's enough to be listed as a "performer." You may want to check it out regardless. It airs May 30 on HBO at 8:00 pm Eastern. More info here:
http://www.joewalsh.com/news/246353/
and here:
http://www.hbo.com/2015-rock-and-rol...e/about.html#/