Krall & friends are indeed well recorded, but not so much as to be an outlier. Mainly it’s such simple, sleep-inducing music that it seems to magically avoid exposing most systems’ major problem areas - and this is why it’s such a popular choice in gear demos. To me - it’s not good choice.
I have a large collection of vinyl plus a decent digital / FLAC library. This is comprised of a lot of hard rock, heavy metal, pop, alt rock, new wave, & soundtracks - not much "audiophile approved" material. I’d say at least half of it (a bit more than half) sounds "really good" or better (with some real stunners), and I try to pick from here where when I get new gear. The other half...is unfortunate. It’s hard for me to enjoy that material, even if I love the music :(