“I’m a jazz musician first, I feel,” says Bilal. Maybe this comes as news to the many admirers who know him as an ethereal singer with a shape-shifting R&B profile, or as one of the original catalysts for neo-soul. On a compelling new album, Adjust Brightness — his first studio release in almost a decade — Bilal explores a galactic sweep of sound, making genre distinctions feel all the more irrelevant to any conversation.