It’s a xylophone, with a twist! Instead of flat bars, xylopipes feature a series of ½”diameter metal pipes of various lengths and in various colors. Strike the notes with the included plastic mallets to create beautiful, bell-like tones. Each set of pipes is based on a C-C scale. Chose the single-octave 8-Note Xylopipes, or pick the 15-Note set for expanded musical fun. The included pamphlet provides music for 3 simple songs to get you started. ~ Rachel P.