Ah, we just caught this at the Guggenheim. Here’s the NYTimes with more:

Frank Lloyd Wright might never have anticipated this. But the rotunda of his late masterpiece the Guggenheim Museum — which opened in 1959, six months after his death — is an ideal place to perform one of the most mesmerizing and eclectic musical works ever written: “Orbits” for 80 trombones, soprano and organ by the Montreal-born American composer Henry Brant. – from NYTimes