Music that is REALLY stereo. I recently-ish got a pair of open back planar magnetic headphones, which sound bloody brilliant. So wide, so open, so crisp! It's almost like VR for your ears with certain tracks and albums.

So ye! Songs that really lean hard on having fun with stereo, or just really well engineered music in general. I was FLOORED when I listened to Nine Inch Nails' The Downward Spiral for the first time with those things, so much fine detail and incredible audio engineering in that album. I'd honestly consider it one of the best engineered albums I've ever listened to, and I'm saying this as a huge Steely Dan fan.

Another go to for me is Pond's Man, It Really Feels Like Space Again. Psychedelic music just hits so incredibly well when I use those headphones, and this album in particular just really takes me through a friggen journey when listening to it.