Music toys are very sophisticated these days. Sure old music boxes and such played some good melodies, but the new battery powered toys can put out midi music with melody and harmony that would put some symphonies to shame. . . that is until they start to lose power. The batteries get low and for some reason the first thing to go is the melody. But the harmony keep on going.
The music becomes dark and somber and to be honest creepy. Our little guys crib TV is going now and it plays some macabre songs while casting an eerie blue light across the crib and it's occupant. . . laying there trying desperately to fall asleep, terrified by the sounds. OK maybe it doesn't both him, but it weirds me out.