It's true, I have proof, they also hate disco.
We were out recording some artefacts this morning, we had the 4wd parked about 300m south of us, ipod on. Soon enough a small herd of donkeys appeared, they seemed transfixed by the music coming from the car. The track playing was a bit of Armin Van Buuren trance and they just stood about 50 metres from the car listening intently/curiously.
I snapped a few pics and then the song ended, next track was a disco number and that was the end of the donkeys, as soon as that came on they flicked their ears, shook their heads and bolted.
Poor disco, even asses hate it.