If ever a jazz musician combined the far extremes of clarity and obscurity, it was pianist and composer Sonny Clark. Over less than a decade’s worth of recording, his precise, boppish touch and subtle sense of phrase rang out on dozens of albums, mostly on Blue Note Records: his own small-group efforts, like Cool Struttin’ and Dial ‘S’ For Sonny, as well as exceptional outings by the likes of Dexter Gordon, Lee Morgan and Johnny Griffin. Whatever the setting, Clark’s pianism elevates the level of play. He’s intuitive, nimble and soulful. Clarity is his calling card.