I've been recalling a scene from a movie I once saw...
There's an adolescent boy who was excited to receive a soundtrack of some sort. The boy immediately went to his room to play the soundtrack (record or tape, not sure what though). A heinous voice spoke, and the boy jumped on his bed then pulled the covers over his head to make a hooded cloak and then started to speak along with the amplified voice.
What movie is this memory from?