Create hundreds of unique compositions that reflect your mood. Simply place a "sound" object on one, two or all three of the "hot spots" located on the base unit, and watch it come alive with sound and light. Each of the seven "sound" objects has three related sounds and matching light effects -- strings, keyboards, percussion, bass, cosmic, soothing and "record your own" sound. Speed up or slow down the tempo, add echo and reverb, or raise and lower the volume. There is even an audio input jack to connect your iPod, MP3 player or any music source (not included). Also, there is a built-in clock that allows you to set the time, the alarm or the soothe-you-to-sleep feature. Requires 4 "AA" batteries, not included. Measures 7"L x 9"W x 3.5"H.