Microphone, music stand and stool all come in the box, which turns 37 keys into a small stage set-up for a child of 3 and up. The mic arm adjusts to different heights so singing and playing happen at the same time, and it also takes an MP3 player when a backing track is wanted. Behind the keys sit 22 demos, 8 percussion effects, 8 instrument tones and 8 accompaniment styles, enough variety that practice does not turn into the same tune every afternoon. The 7.5-by-4.5-inch stand holds sheet music and lifts off when it gets in the way. The piano body measures 15.8 by 8.9 by 19.3 inches, the whole set stands 23.5 inches tall, and the stool takes up to 110 pounds.