On this tribute to Augustus Pablo, Morton Feldman, Sun Ra, and Terry Riley, multi-instrumentalists Dax Pierson (Subtle) and Robert Horton (a.k.a. Egghatcher, Future Ears) erect academically rigorous soundscapes that lean more toward Feldman's dispersive use of space than they do dubby rhythmic ballast. Of the titular legends, Feldman and Riley receive the most aural love. At its best, PFSR generates fluctuating mantras of minimalist bliss, and foreboding synth jabber that evokes bleak, unpopulated vistas. As earnest and intriguingly bizarre as PFSR is, the album, more than anything, makes one want to delve into its honorees' catalogs.