" data-original-title="" title="">Herbie Hancock and classical phenomena Lang Lang had in mind when they conceived their joint world tour, making its American premiere Tuesday night at the Ravinia Festival in Highland Park. Playing perhaps the most celebrated crossover work of all time, George Gershwin's “Rhapsody in Blue," as well as jazz solos and modernist classical pieces, the concert seems as much a cultural manifesto as a musical evening.

“The fact of the matter is that boundaries in descriptions of musical genres really create limitations," says Hancock. “Music itself has no boundaries."