Ride the lightning, monkeys

A study published in the Royal Society journal Biology Letters has found that tamarin monkeys prefer Metallica to other industrial and progressive rock acts (via):

In the study, 14 cotton-top tamarins were played 30-second blasts of music while the researchers noted any changes in their behaviour. The animals were played Samuel Barber's Adagio for Strings and a soft piano piece from The Fragile by rock band Nine Inch Nails, followed by Metallica's Of Wolf and Man and an excerpt from The Grudge by rock band Tool...The only human music that elicited any response was the heavy metal band Metallica, whose music had the unexpected effect of calming the monkeys.