Blu-ray With 192/24 Resolution Quadraphonic And Hi-Res Stereo Mixes Transferred From The Original Half-Inch Four-Channel Masters Quadraphonic sound, or 4.0 surround sound, utilizes four audio channels connected to four speakers positioned at the corners of a listening space. The multi-tracked audio is mixed dimensional, immersing the listener in an expansive soundscape. Donny Hathaway's final studio album, EXTENSION OF A MAN, released in 1973, was a collaborative effort with renowned musicians Stanley Clarke (Return to Forever), Fred White, Al Kooper, Billy Preston, and many more. The album featured the transcendent track "Someday We'll All Be Free," which featured lyrics from Hathaway's close friend and manager, Edward Howard.