Diana Krall

DK is harmonically flat, even by Jazz standards that have no interesting harmonies.  (I am using harmony in the musical sense of Chords.) -  score 0/10.  Melodically I find her uninteresting - maybe 4/10.    Rhythm: nothing sophisticated 1/10.  All in all a bore.  Voice is excellent - at least 7/10. 
Malcolm Steward writing for Hi-Fi Choice gave her a great roasting.  One of his comments was along the lines (I will try to quote from memory):  "... and don't get me started on her sub-Liberace piano tinkling."  !!  Her backing 'band' have all the enthusiasm of men heading off to have vasectomies from a blind surgeon with Parkinson's. 

Love Scenes on cassette through my Nak 1000ZXL is one of the very best sounding recordings I have.  It sounds like master tape~

One song: her cover of Joni’s Black Crow, convinced me there was possibly more there than I had previously been hearing. I’ll continue to investigate. 

Put me in the camp of "I don't get it". I don't understand why audiophiles are fascinated with her. I don't think she has a good classic voice. She just kind of - talks. But to each his own. Not my type of music either, except maybe as background music at a nice restaurant, but that's beside the point. I can appreciate great artists in unfavored genres, like Celine Dion and Whitney Houston. I just don't see it here. But then again, I don't get the audiophile fascination with screamers like Aretha Franklin or foggy vocals by Norah Jones either.

@jasmith, there is no correlation between being an audiophile and being a music-phile. It is a random correlation.

Diana Krall, Harry Connick, Jr., Natalie Cole, Andrea Bocelli...etc, etc, etc. If you know what I mean you need no explanation. If you don’t know what I mean then enjoy your music.