For many audiophiles, some recordings (not specifically Nora Jones) are used as a tool to evaluate equipment, and not always for listening pleasure.
One of my go-to songs for someone wanting to hear my system (and who is not into rock/classical/jazz) is "Down to the River to Pray" on my wife's live Alison Krauss CD. It's such a pristine recording with some really incredible staging (provided my wife hasn't moved my speakers out of alignment). You just sit in the sweet spot of the living room, close your eyes, and she's there, singing about five feet away from you, the harmonies from the band unfolding behind her. And then I crank up the live "Man of Constant Sorrow" and put the CD away for another year. And ignore any more requests for "country".