...For the final Tuesday of the summer Christie brings Gonzalo Grau's Clave Secreta to Boulder.

Christie sees Grau as a musician who can do everything.

"Anything he touches turns to music," he says. "He's one of the most versatile musicians I've ever met."

It was this impression that led Christie to engage Venezuelan-born Grau and his ensemble for a collaboration with the Brooklyn Philharmonic last season.

"We were doing our first 'Nueva Latina' festival," Christie says, "and I asked Gonzalo to come up with a program that blends the Western symphonic tradition with Latin folk music."

So successful was the program that Christie decided to repeat it at the CMF...