 Numerous works were written for them by composers including Alban Berg, Anton Webern, Arnold Schoenberg, and Béla Bartók.The Quartet's tours extended eventually to include all European countries including Scandinavia, and also (by the mid-1930s) North and South America.One notable aspect of the Quartet was that they generally performed from memory, including difficult modern works such as the "Lyric Suite" of Berg.