Frank Zappa brought his band to the RPI Fieldhouse in Troy, road-testing material in the wake of Joe’s Garage, his biting 1979 rock opera about music censorship. The lineup — Ike Willis, Ray White, Arthur Barrow, Tommy Mars, and David Logeman — was tight and fearless, drawing setlists heavy on Joe’s Garage cuts alongside staples like “Bobby Brown” and “Don’t Eat The Yellow Snow.”