I used to own a young pair of coastal taipans( Oxyuranus scutelatus) that became quite agitated at loud music and would slither around as if it was distressing them (taipans are very alert reptiles and young ones especially are easily aroused) I think the way sound affects snakes or other herps depends on the acoustic qualities of there enclosure. My taipans were housed in a thin plywood box and this resinated the sounds and turned them into strong vibrations, I believe that loud music does distress herps particularly those tracks with loud base beats. Regular exposure to loud music over time could lead to increasing stress and reduced immunity to disease\infections possibly leading to death of the animal. An occasional song probably wont hurt the little tykes.