The Quartet's repertoire was centered on the Viennese classics, but with a serious emphasis on the 20th century. It was the stated goal of the quartet to include at least one modern work in each performance. Their repertoire spanned from Early Classicism, Romanticism, to the Second Viennese School (Berg, Schoenberg, Webern), Bartуk and embraced many contemporary composers. This took expression not the least in personal statements by composers like Witold Lutoslawski and Luciano Berio, of whom the former said: "Personally I am indebted to the Alban Berg Quartet for an unforgettable event. Last year in Vienna, they played my quartet in a way such as will never be likely equaled."