“For the first few EPs of their career, Los Angeles’ Superhumanoids specialized in sleepily epic dream-pop, kind of like Tears for Fears after a day at the beach. For their forthcoming self-produced debut LP, Exhibitionists (out August 6 via Innovative Leisure), the trio shed their drummer and slightly level their skyscraper synths, filling any extra space with riffs on the R&B that singer Sarah Ch”