URBANA — One of the earliest musical works for a computer, "HPSCHD," produced by University of Illinois Professor and composer John Cage, will be presented from 6 to 8 p.m. Thursday at the Analog Cafe, 129 N. Race Road, U. The free performance by artist/producer Gary Pini marks the 50th anniversary of the piece's premiere on May 16, 1969, at the Assembly Hall. read more