Richter, who’s written for ballet, opera, and film, teamed up with a neuroscientist to determine which sounds and tones enhance slow wave sleep — the deepest stage of sleep, which helps you recharge physically and mentally, says a writer for Men’s Health.

I’d already gotten the exact same question from two other friends who’d watched my Instagram story. IRL, I’d received similar responses all week after telling people about my Saturday night plans.

Sleeping in a room with 160 strangers during an eight-hour overnight concert seemed incomprehensible to everyone I know, but that essentially sums up British Composer Max Richter’s performance of Sleep at Spring Studios in downtown Manhattan last Friday and Saturday nights.