It is summertime in South America, and while the cows graze nearby in the tranquil countryside, top American and Latin musicians have been showing off their style this week at the 11th Lapataia International Jazz Festival on the El Sosiego-Lapataia dairy farm just up the road from Punta del Este in Uruguay. The festival, begun by Francisco Yobino, the owner of the farm, as a way to expand its activities and draw visitors from a nearby resort, is the top stop in South America on the world jazz circuit, Reuters reported. The Marsalis clan from New Orleans is represented by the trombonist Delfeayo Marsalis's quintet. Others on hand include the saxophonist Gary Bartz, who accompanied Miles Davis, and the former Jazz Messengers pianist Cedar Walton.