Keeping secret identities, rising R&B electropop artists ASTR are testing the waters with slick, slightly sinister club bangers. The “NYC Duo” mixes processed vocals, 808s and heavy bass drops, producing dance tracks that sound like they came from a seasoned hit factory. Dark undertones ground their handful of high-gloss tracks, but they never dive into the creep-pop or drug-stupor of influences like Purity Ring and The Weeknd. The pair’s latest single is a radio-friendly earworm called “Operate.” The twitchy, washed-out companion video borrows from NIN’s, “Closer,” with blood, guts and silent film footage spliced between shots of the glam, unknown singer, whose “Operate, Oh-oh” has a tinge of Caribbean accent. The sleuth behind the buttons remains a mystery. – Bianca Seidman