The hits on Sly & the Family Stone's fourth album—“Sing a Simple Song,” “Everyday People,” “You Can Make It if You Try,” the title track—comprise the DNA of funk. And yes, it's Sly’s; he wrote, arranged, and produced the whole thing, pushing the band's ensemble sound to ambitious extremes by corralling different lead singers, Larry Graham's bullish basslines, Freddie Stone's psych-rock guitar, Rosie Stone's eerie organ runs, and swirls of ensorcelling horns. Unifying, uplifting, and visionary, this is the album that sealed Stone's legacy forever.