Not only can children make music with this set, they make the musical instruments, too! Colorful construction set consists of 40 interlocking pieces that children can use to put together their own percussive, whistling, and shaking instruments. Includes metallic whistle, canister that converts into a tambourine and a drum, drumsticks, washboard rattle, sand-filled shakers, and 4 pose-able eyes that turn the musical instruments into characters. They'll also enjoy playing along with the CD that's included; it's recorded with the Bonz Band instruments. Construction pieces are compatible with other Bonz sets.