*''I'll Sleep When You're Dead,'' [[EL-P|El-P]] (Additional production and vocals, "Flyentology")
*''Era Vulgaris,'' [[Queens Of The Stone Age]] (Vocals, "Era Vulgaris")—available for download
*''The Inevitable Rise And Liberation Of NiggyTardust!,'' Saul Williams (Producer; music, tracks 1–2, 5–8, 11–15; programming, "[[Black History Month]];" "[[Tr(n)igger]];" "[[DNA]];" vocals, "[[Break]]" and "[[WTF!]];" arrangement, "[[Sunday Bloody Sunday]]")
==External Links==