The most popular set of Boomwhackers for everyone! Because all of the notes sound good together, this set is great for very young children and people who think they can't play music! Found in most elementary music classrooms and music therapy programs around the world, these affordable, color-coded, tuned percussion tubes provide an opportunity for any age and ability to experience success making music. This set consists of 6 notes that create a pentatonic scale, which is designed to sound pleasant when all played together. C,D,E,G,A,C Tube length: 11" to 24".