Judging from how the Virgin Mary acted, she didn't seem like someone who would appreciate music.
Peter walked with his feet as close to the ground as possible. This allowed him to reduce any interfering noises so that he could hear the continuous sound.
As Peter got closer to the source of the sound, he finally understood what the voice was saying. It was not a rap at all, but a miserable moan. He had seen this situation on the island before. When the sharp fangs of the giant snake tore open the abdomen of a student from the Genetics College, the Genetics College student died from the extreme pain with a miserable moan.
After confirming the location of the voice ahead, Peter began to speed up. In less than a minute, he arrived in front of a building that looked like a laboratory as he held the lighting system.