The cover art of Cream's Wheels of Fire, dimmed, beside a dark disc of concentric rings, one for each release of "White Room" measured, from period LPs at the center to the 2026 box set at the edge; each ring glows at its left–right phase difference, near 0 or −90 degrees.

Where Did the 90 Degrees Go? Haeco-CSG in Cream’s Wheels of Fire, from the 1968 LPs to the 2026 De-CSG

Cream’s Wheels of Fire came out in a 2026 Super Deluxe Edition billed as including a version without CSG. So how did CSG survive in the CDs, SACDs, and downloads that came before? I measured nine digital releases and five period LPs. Two questions came out of it, and I could answer only one.