I was hanging out once with a dairy farmer in his milking parlor in Wales. He switched on a tape machine to play some reggae for his Friesians. He said it helped get the milk flowing.
Apparently, cows love music.
(Direct link to video) This video proves that cows in France have a fondness for New Orleans jazz.
...Oh, and belugas like Mariachi music. Thanks, Dan
Previously: An audio visit to the Tyddyn Perthi farm in Gwynned near Caernarfon in Wales