Sounds of a percussion instrument consisting of a set of wooden bars struck with mallets to produce musical tones. Resonators suspended underneath the bars may amplify their sound.
Sounds of a tuned mallet percussion instrument similar to a xylophone or glockenspiel with the addition a motor-driven valve on each resonator that produce a tremolo or vibrato effect.
Sounds of a tuned percussion instrument originally constructed from steel oil drums by hammering out small patches on the head to produce separate pitches.