Set of 5 percussion tubes - “boomwhackers” – in C-D-F-G-A tuning that produce bass tones. Tubes are made of plastic and are ideal for elementary music classrooms, children and performance artists. They can be also used to improve and develop sensorimotor skills and rhythmic training. Tubes produce tones when struck together or against surface. They are tuned to musical pitches by their length, colour-coded and lightweight.