TeoulennonIt varies. Right now I'm primarily listening to second wave black metal (Darkthrone, Burzum, etc.) but I also enjoy bluegrass, some hardstyle/deep house, and classical. IT03 had exceeded my expectations entirely and I wouldn't hesitate to recommend them to anyone. I do miss the clarity of my ER4s but the overall sound sig of the IT03 is more full and fun while still delivering a good amount of detail. The only thing to keep in mind with any universal fit IEM is that they might not work with the shape of your ears. If you're near DC I'd be happy to let you (or anyone else) try mine!