Adolf Georg Wilhelm Busch (August 8, 1891 – June 9, 1952) was a German-born violinist and composer.
In 1912, Busch founded the Vienna Konzertverein Quartet, consisting of the principals from the Konzertverein orchestra, which made its debut at the 1913 Salzburg Festival. After World War I, he founded the Busch Quartet, which from the 1920–21 season included Gösta Andreasson, violin, Karl Doktor, viola, and Paul Grümmer, cello. The quartet was in existence with varying personnel until 1951.
The additional member of the circle was Rudolf Serkin, who became Busch’s duo partner at 18 and eventually married Busch’s daughter, Irene. The Busch Quartet and Serkin became the nucleus of the Busch Chamber Players, a forerunner of modern chamber orchestras.
The Busch Quartet was particularly admired for its interpretations of Brahms, Schubert, and above all Beethoven. It made a series of recordings in the 1930s that included many of these composers’ works for string quartet. In 1941, it set down three Beethoven quartets that it had not previously recorded, including Opus 130. The Busch Quartet never recorded the Grosse Fuge, Opus 133; an arrangement was recorded by the Busch Chamber Players, with Busch leading from the first violin desk.