Onstage, the pianist Jean-Yves Thibaudet practiced his solo part in “Prometheus,” which the San Francisco Symphony will perform March 1 through 3, while the conductor Esa-Pekka Salonen listened attentively to the wooden vortexes as they were being tested; the sound they made while emitting smoke, he noticed, was nearly a G.

Mathilde Laurent, Cartier’s longtime perfumer, who had designed the scents, double-checked notes on her iPad. For this day’s test, without the orchestra, she wanted to be sure the diffusers were timed to match the music. So they were going to play a recording overhead.

— Read more in Smell the Music: Inviting a Perfumer Into the Concert Hall at The New York Times.