If you’re in the LA area this Sunday, and can spare 4 hours and then some (4 hours for the concert, then some for the commute and parking), 3 young musicians attending the Music Department at University of California, San Diego will perform Morton Feldman’s For Philip Guston. While Feldman performances at UCSD are common enough, the sheer scale of For Philip Guston makes any production a rare event: 4 hours of late Feldman. Rachel Beetz will play flute (can you imagine playing a wind instrument for 4 hours with no breaks outside of the rests the composer gave you?),