ImPULSE is a rhythmically driving percussion quartet based around a quarter note pulse. This pulse grows in intensity until the very end of the piece where it creates the final climax. Instrumentation (In ascending level of pitch) Percussion 1: Skin, Skin, Skin, Skin Percussion 2: Metal, Metal, Metal, Metal Percussion 3: Skin, Wood, Skin, Metal Percussion 4: Skin, Skin, Wood, Metal