Sinfonia (for Orbiting Spheres) is music in the shape of a solar system, a collection of rococo loops that twist around each other within a larger orbit. The word “sinfonia” refers to baroque works for chamber orchestra but also to the old Italian term for a hurdy-gurdy, a medieval stringed instrument with constant, wheezing drones that are cranked out under melodies played on an attached keyboard. It’s a piece that churns and roils, that inches close to the listener only to leap away at breakneck speed, in the process transforming the ensemble turns into a makeshift hurdy-gurdy, flung recklessly into space. Sinfonia (for Orbiting Spheres) was commissioned by the Los Angeles Philharmonic.
— Missy Mazzoli