A night of exploring all that 'fusion' music entails

For well over a century, "fusion," the osmosis-like seeping of jazz and folk and their relatives, rock and soul, into the classical idiom, has enlivened offerings at concert halls. For its season opener Friday at Georgetown University's Gonda Theatre, Alejandro Hernandez-Valdez and his New Orchestra of Washington turned this phenomenon on its head with a program (not surprisingly titled "Fusion") in which classical elements (primarily instrumentation and form) have infiltrated the world of rock,...