My daughter loves to hear music constantly. Anything that plays music has always been a favorite toy. This has an adjustment so you can play it for just one loop of music. I do this when my daughter is playing with it and I want the cause and effect approach. It also has a setting where it will play continuosly for about 5 minutes and circle through a series of songs. Music is nice, not the annoying type. There are several songs not just one of two. (five? maybe, I don't know for sure). The music playing so long and the lights flashing has calmed her to sleep on many a night. She never really noticed the mirror part of it.