Rudolf Matz (September 19, 1901 – March 22, 1988) was a Croatian composer who had written about 500 instrumental and vocal compositions.Leonard Rose called Matz, "perhaps the greatest cello theoretician in the world." Janos Starker said, "Rudolph Matz's dedication and expertise has produced much needed material for the young cellist."Rudolf Matz (Austro-Hungarian Empire, Kingdom of Croatia-Slavonia, Zagreb, 1901 – Zagreb, 1988), an important figure in the musical life of Zagreb in the 20th century, was a composer, cellist, teacher, conductor and choir master. He worked in music for more than six decades – from 1920 right up to his death, and associated with musicians, eminent professionals as well as amateurs, while his wife Margita was a pianist, harpsichordist and keyboard teacher.He studied violoncello, composition and conducting at the Zagreb Academy of Music, from which he graduated in 1926. He became Professor of Cello at the Zagreb Music Academy (1940/41 and 1950 until his retirement in 1972), achieving international renown for his cello-teaching methods, which he brought together in a great compendium entitled 'First Years of the Cello' in 32 volumes (1948-1962). He would be invited to take part in the work of juries in the most prestigious cello competitions, in Moscow and Florence.Rudolf and Margita Matz donated their long-time home in the second floor flat at 15 Mesnicka Street to Zagreb City Museum, together with their invaluable effects. The Margita and Rudolf Matz Memorial Collection will be set up in the apartment, once famed for its encounters with musicians and its intimate concerts (in 1967, for instance, Matz was visited here by celebrated cellist Mstislav Rostropovich).