Master percussionists find connections between the rhythmic languages of Brazil, Northern India, Brazil, and New York City — and we listen in as one of them improvises music from a collection of plastic buckets, vacuum-cleaner hoses, and duck calls.

Featured musicians include Poncho Sanchez, Cindy Blackman, Bill Summers, Suphala, and Cyro Baptista.

French vocal loops, coloratura fireworks, and Jubilee singing from five masters of that most elemental of human instruments — the voice.

Featured musicians include Renée Fleming, Joseph Shabalala, Clarence Fountain, Cecilia Bartoli, and Camille.

Stories of performers whose music has been deeply influenced by their world travels — and, at times, by the borders that have been closed to them.

Featured musicians include Yo-Yo Ma, Tan Dun, Albert Kuvezin, Arturo Sandoval, and Abigail Washburn.

Legendary supporting players tell what it takes to back up Sting, Emmylou Harris, and Ella Fitzgerald — and what happens when they finally step out front themselves.

Featured musicians include Christian McBride, Ernie Ranglin, Michael Ramos, Jerry Douglas, and the late Keter Betts.