Why is My Speaker System Playings Music when it is turned off and isn't connected to a radio?

Question

I have a Durabrand HT-3917, it is turned off with no form of music player or cable/satellite attached to it and it is currently playing classical music at a barely noticeable volume. When I turn on the speaker system the volume is louder and doesn't play classical music. Where is it coming from?

Answer 1

its the ghost of beethoven,

most definetly (+_+)

Answer 2

the speakers could be picking up a very weak signal from the air. This sometimes happens, but it's no big deal if you can barely notice it.