In just a decade, Switzerland's annual Verbier Festival has become one of the premiere international musical celebrations, attracting a who's who of world-renowned artists to the Swiss countryside, in the shadow of the Alps, for more than two weeks of classical music performances.

This year, in celebration of the 10th anniversary of the festival, a group of the world's greatest pianists gathered to play arrangements of classical favorites for four to 16 hands on one to eight pianos. Pianists Leif Ove Andsnes, Nicholas Angelich, Martha Argerich, Emanuel Ax, Claude Frank, Evgeny Kissin, Lang Lang, James Levine, Mikhail Pletnev and Staffan Scheja perform works by Mozart, Wagner, Rimsky-Korsakov, Smetana, Sousa and Gottschalk.

Also featured is Bach's Concerto in A minor for four pianos, performed with the Verbier Birthday Festival Orchestra: Renaud Capucon, Sarah Chang, Ilya Gringolts, Gidon Kremer, Vadim Repin, Dmitri Sitkovetsky,Christian Tetzlaff, Nikolaj Znaider, Yuri Bashmet, Nobuko Imai,Mischa Maisky, Boris Pergamenschikow and Patrick de Los Santos.

Michael Kimmelman, chief art critic for The New York Times, hosts the program.