Barry,
If authenticity matters a lot to you, you'll like it that the first 20 min. or so of the film is all about music: Tar's New York stage interview followed by her lengthy class at Juilliard^
And speaking of the rehearsal scene in which Tar and BPO are engaged in rehearsing Mahler Fifth (the final symphony to be recorded for their Mahler cycle), it is really well done. Very intense, realistic with lots of small details, and superbly directed.
The whole film has a Stanley Kubrick feel attached to it, e.g., the steady pacing, classy sets, wide angle cinematography, and a couple of 'abstract' images: the director Todd Field worked with Kubrick on <Eyes Wide Shut>.
John