This easy to assemble music box comes with 4 different songs (Frere Jacque, Old macdonald had a farm, Twinkle twinkle little star and 10 little solders). With the violin shaped screwdriver, you put the music box together in no time. If you want to change the song, you simply unscrew the parts that hold the cylinder in place and replace it! The supplied soundbox makes the music box sound great.