The Boomwhackers Boomwhackers BW-DG Set is a diatonic boomwhacker set consisting of eight plastic tubes. The tubes cover the notes C', D', E', F', G', A', H' as well as C' ' and are tonally matched. Matching their note value, each tube has a specific color. The connection between color and tone makes learning and teaching notes and melody even more playful and simple.