“A fusionist from the get-go, with an outsize, mixed-race-and-gender band, Sly Stone was less interested in genre blurring than in the hot glory of multiple styles played simultaneously. Check his 1964 solo jam "Scat Swim," a surf-pop instrumental with raw blues licks and jazzbo vocalese. It's a highlight of this four-CD box, the richest overview yet of maybe the most visionary funk operation in po”