Cheers Rezolver and Dubstep Girl for the music posts, enjoyed listening to them, Aes Dana and Veela are surely now on my short list =)
I like this mix from Armin van Buuren's Drowning. The original album is called Mirage and it is brilliant.
I like you guys suggesting music that sounds great on the HE-500 since music is what is behind all our gear.
Let me chime in with a few other great tracks:
You gotta love this bass, it really kicks. Nice atmospheric background as well.
This is of a different style now: country influenced singer / songwriter. In brief, she sings amazingly. This song is to make you melt down.