Choose your babys music! Let baby enjoy endless musical variety;Detachable take-along baby MP3 player, 8 pre-loaded classical melodies by Mozart, Schubert, Mendelssohn and more;Detachable take-along baby stereo player;Baby-safe MP3 compartment for uploading babys favorite music using a USB stick (not supplied);Light, mute & movement control. Easy, 3 step assembly with 3 soft, colorful characters and 3 prism balls