“Galcher Lustwerk made his name largely with his voice. That's not to take away from the strength of his productions, darkly lustrous deep-house cuts that unfurl like rolls of crushed velvet stuffed with thumbtacks. But it was his hypnotic, free-associative sing-speaking—in a gravelly, seductive baritone—that made last year's 100% Galcher mixtape feel like such a revelation. Now, under the alias Ro”