The musical notes in these songbooks are colour-coded to match the tubes according to Boomwhackers' Chroma-Notes™ Coloured Music System. The coloured notes enable anyone to easily play and learn about reading music at the same time. One person can play the songs on a XyloTote Tube Holder or several people can each have one or two tubes and play their notes as needed - a great group activity! Contains 19 familiar children's songs and one original song- designed for the standard C Major Diatonic Set.