By now, I think all the members of Patricia Barber's QQ Choir already know about this disc, but having just acquired the SACD (after buying a download last fall from NativeDSD), I want to sing one more chorus.
Jim Anderson did a beautiful job with this: it's a subtle 5.1 mix for a (mostly) low-key album. Many of the tunes are spare, slow, even stately voice-and-piano affairs, with bass, guitar, sax and/or percussion joining in more for color than for accompaniment. (Great sax solo on "Pallid Angel," though, and a handful of tunes are full piano-quartet workouts.)
The soundstage is mostly spread across the fronts. On several cuts there are touches of snare, cymbal, or hi-hat in the rears, which are otherwise mostly natural studio reverb adding depth & ambience.
Standouts from a mix point of view: "The Albatross Song" (the one tune that most resembles what I like from earlier Patricia Barber albums) and "The Opera Song."