Every few months, the Glendale Community College Percussion Ensemble holds free concerts in the school's cozy and acoustically awesome auditorium. The programs, which take place a few times each semester, are more experimental in scope (think John Cage and Steve Reich), and sometimes stray away from the classical idiom altogether — one gig featured the music of Mr. Bungle, Frank Zappa, and Billy Joel. But no matter what your ears are accustomed to, the group will certainly satisfy in some way. It is one of the largest and best community college programs for percussion music in the country.