@moonwatcher had a nicely worded response .. describing what makes for a great track ..
Placement, staging, resolution, timbre have become the fine points I etc long to seek out, once deciphered, I can then rest that my standard catalog will sound as good as it can.
But one additional point .. I find that a recording of natural acoustically recorded instruments yields me the best quick analysis of performance.
I have rested on the early Jim Keltner Shefield Drum track .. ( the HDTr transfer is not a great representation of the recording, find an early Sheffield album or disc, the early work is amazingly different in heft attack, and dynamics) ..
and 2) if so blessed to find the early produced test disc by Opus 3 Test Disc 1 (track 1) "Tiden Bara Gar" has female voice. Both discs feature winsomely instruments placed for depth, sonic placement, and resolution. The Opus One features a few other choice cuts on there that are amazingly resolving due to the care in capturing the original recording.
Thanks to the contributors for the many cut suggestions .. am anxious to explore many of these!