Mostly Symphonies 45.

Sinfonia No. 4, marking Walker’s 90th birthday, is a highpoint.

Piano Factory 32.

I hear the last four sonatas as a connected sequence where Walker’s system appears to value compact expression over logic.

String Theory 21: Mostly Viola(s)

Royer is an inspired Scelsi performer. He plays as if improvising, easing into Scelsi’s languid microtones with grace notes flicked away like involuntary twitches.