This is a most useful collection. The most important items (and, in fact, the only truly ‘genuine’ chamber works) are the String Quartet and Lyric Suite. The others are arrangements of more than passing interest (at least the ones by Berg himself) but it is probably the two big works that will interest collectors most.
Hours and hours of delicate masterpieces by the Viennese Classical master, Mozart! The Alban Berg Quartet, Markus Wolf (viola) and Alfred Brendel (piano) perform String Quartets K. 387; 421; 458 ("Hunt"); 428; 464; 465 ("Dissonance"); 499 ("Hoffmeister"); 575; 589; 590; 515, and 516, plus String Quintets K. 515 and 516; Piano Concerto K. 414 (arranged for piano and string quartet by Mozart), and Piano Quartet K. 493.
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."
In terms of the scale of his compositions, John Adams' career is somewhat anomalous for a contemporary composer. While the usual pattern tends to be for a composer to begin a career writing smaller pieces (which have a far likelier chance of being performed) and then expanding to larger forms as his or her reputation grows, Adams (with very few exceptions) was writing large-scale operas and orchestral and choral works starting in the early '80s and didn't begin devoting himself to chamber music with any regularity until the mid-'90s.