 The repertoire at these concerts is almost universally the classics of the 19th century.However, modern works are increasingly included in programs, and some groups, like the Kronos Quartet, devote themselves almost exclusively to contemporary music and new compositions; and ensembles like the Turtle Island String Quartet, that combine classical, jazz, rock and other styles to create crossover music.Cello Fury and Project Trio offer a new spin to the standard chamber ensemble.