Singer/songwriter, pianist, jazz experimentalist, soundtrack composer, beat-style poet -- Donald Rubinstein has somehow juggled all those hats over the lengthy span of his creative career. Rubinstein studied music at the University of Washington and moved on to stints at Berklee (where he befriended guitarist Bill Frisell) and Columbia in the mid-'70s. He first made a splash by scoring two films by horror director George Romero: the modern-day vampire tale Martin (1977) and the offbeat motorcycle flick Knightriders (1981). The latter picture starred future Oscar nominee Ed Har...