91X Event photos from the 2015 XFest Concert at Sleep Train Amphitheater featuring Cold War Kids, YelaWolf, Death from Above 1979 and Modest Mouse.November 15, 2015 by Casey Lorz Comment Posted in Concert, Event, Nightlife Check out my gallery from my shoot of 91X XFest 2015. It was a great show at Sleep Train Amphitheater?featuring Modest Mouse, The Cult, Public Enemy, Yelawolf, Cold War Kids, Death From Above 1979 and my new favorite Moon Hooch. Tags: concerteventsan diego