1. 6-Note C Major Pentatonic Set

The Boomwhacker C Major Pentatonic Set contains 6 notes (low C, D, E, G, A, high C). These notes are all very common in the U Kaboom song set.

2. 8-Note C Major Diatonic Set

Perhaps the most common Boomwhacker set, this is the C major scale, made up of 8 notes (low C, D, E, F, G, A, B, high C). Essentially, it's the Pentatonic Set plus the F and B notes. These are also very common notes in U Kaboom.

3. 8-Note C Major Diatonic Set with 8-Pack Octavator Caps

This set includes the 8 note Diatonic Set (low C, D, E, F, G, A, B, high C) plus 8 Octavator Caps. You can learn about Octavator Caps in the video above. An Octavator Cap can be placed on any Boomwhacker to bring the pitch down by one octave. They are quite common on U Kaboom songs.

4. 5-Note Chromatic Set

While the diatonic set notes are the white keys on the piano, the chromatic set are the black keys. These are your sharps (#) and flats (b). They are less used in U Kaboom overall, however the A#/Bb is fairly common on some songs and you do find a couple of the others pop up here and there.

5. 54 Tube Classroom Pack

This set includes four 8-Note Diatonic Sets, two 5-Note Chromatics Sets, two 6-Note Pentatonic Sets, two sets of 8 Octavator Tube Caps, one pack of 500 Chroma-Notes Stick-Ons, and a Boomwhackers Tote Bag.