Debuted on his BBC Essential Mix last month, George Fitzgerald returns with another House monster in “Thinking of You.” Fitzgerald cloaks the buildup underneath an inhuman vocal sample, cut-up and smashed back together to sound like a constant come-up. The effect is kinetic and tactile; the almost overwhelming pay-off Fitzgerald leads you to is all metallic hand-claps and fat minor synth-tones. Unlike “Child,” Fitzgerald’s signature tune from last year, this track isn’t fun, it’s menacing and dark.