Great lists, @Tchoupitoulas and @berzerkeleyan! I’m really discovering some new recordings and genres that I think I’ll like.
I’ll add a few more nontraditional options, including some international (Indian) songs.
A. R. Rahman - Radha Kaise Na Jale - from “Lagaan”: https://open.qobuz.com/track/167063 (very high treble and drum punch)
The intro to the song has really piercing chimes followed by a really punchy drum. Good for testing treble smoothness / extension as well as slam.
Mark Nauseef - With Space in Mind (whole album): https://www.marecordings.com/main/product_info.php?cPath=65&products_id=47&osCsid=av96s6oqj3gtlvha6dq3apht62
Haven’t found this for streaming anywhere, but it’s a fantastic album for testing layered resonance, sound texture (especially some of the percussion instruments have a very rough lingering texture), imaging, space (you can hear the echo of some drum beats far off to the left / right), sound stage (some sounds feel like they revolve around you), and slam.
Augustin Haderlich - Paganini: 24 Caprices, Op. 1: https://play.qobuz.com/album/0190295727444
Really well recorded solo violin. Great for testing microdynamics, bite, detail retrieval (you can hear the hand sliding around on the violin, his breathing, etc.), and space (on some tracks, you can hear the violin echo).
Various Artists - Miles in India: https://play.qobuz.com/album/wpzsq8ns8e3zb
A REALLY cool fusion album that takes Miles Davis’ compositions and blends them beautifully with Indian classical music. What you end up with is a really interesting blend of instruments and vocals that’s beautifully recorded and engaging all through. I particularly like So What and Blue in Green, but the rest are great too. Very good for testing instrument separation, imaging, and texture.
Yehudi Menuhin and Ravi Shankar - Swara-Kakali - from “West Meets East”: https://open.qobuz.com/track/88078253
One of the fusion recordings from the early days that actually showed what was possible and popularized the concept itself. The song ends in an incredible crescendo of violin and sitar accompanied by a Tabla (played by another all time great, Alla Rakha). Great for testing the layered complex sounds of a sitar (it has 21 strings!), detail retrieval (random stage noises), and instrument separation (being able to pick out all 3 instruments reaching a crescendo simultaneously).