Question: Suvini Zerboni was the agent of which prolific german composer violist, violinist, teacher and conductor ?

<P0-S0> Emil Anton Joseph Friedrich Kreuz, also known as Emil Frederick Thornfield, (25 May 1867 in Elberfeld – 3 December 1932 in London) was a German violinist, violist, teacher, conductor and composer. <SEP> <P1-S0> Paul Hindemith ( ) (16 November 1895 – 28 December 1963) was a prolific German composer, violist, violinist, teacher and conductor. <P1-S1>  Notable compositions include his song cycle "Das Marienleben" (1923), "Der Schwanendreher" for viola and orchestra (1935), and opera "Mathis der Maler" (1938). <P1-S2>  Hindemith's most popular work, both on record and in the concert hall, is likely the "Symphonic Metamorphosis of Themes by Carl Maria von Weber", written in 1943. <SEP> <P2-S0> Suvini Zerboni (ESZ) Italian music publishing house founded in 1907 in Milan, taking its name from the theater society of the same name. <P2-S1>  The ESZ catalogue included, besides operetta favourites, the best of Italian contemporary music, such composers as Goffredo Petrassi, Luigi Dallapiccola, Luciano Berio, Ildebrando Pizzetti, and Gian Francesco Malipiero. <P2-S2>  Since the 1950s, ESZ has been the Italian agent of Schott Music, representing composers such as Igor Stravinsky, Carl Orff, Paul Hindemith, Richard Strauss, Luigi Nono, Krzysztof Penderecki and Joaquín Rodrigo. <P2-S3>  The ESZ catalalogue of modern Italian composers active since the 1970s is extensive. <P2-S4>  ESZ also publishes the bulletin “ESZ News” with information on the activities and performances of its composers. <P2-S5>  Until 1999 ESZ published "Il Fronimo", the guitar magazine founded by Ruggero Chiesa in 1972, and "La Cartellina", a magazine on choral and pedagogical music, founded by Roberto Goitre in 1977 and subsequently headed by Giovanni Acciai. <SEP> <P3-S0> Eduard Oja (January 17, 1905 in Palupõhja - April 16, 1950 in Tartu) was an Estonian composer, conductor, music teacher and critic. <P3-S1>  His father was a forest warden. <P3-S2>  Between 1919-1925 he studied at Tartu Teacher's College at Tartu University, where he met Eduard Tubin, and he also worked for some time as a school teacher. <P3-S3>  He was not a particularly prolific composer, composing mainly orchestral and ensemble works and choral music. <P3-S4>  He was however much appreciated during his lifetime, and received awards and acclaim for several of his works. <P3-S5>  He also worked as a conductor, leading the Tartu Women's Singing Society’s Women's Choir between 1930 and 1934, as well as a teacher of music theory at Tartu Higher School of Music. <P3-S6>  In addition, he was himself a practising violinist. <P3-S7>  A number of his works such as the opera Oath Redeemed (Estonian: "Lunastatud vanne" ) and the choral work The Return Home (Estonian: "Kojuminek" ) have been lost, although the majority of his work has survived, and is valued in museums in Estonia today. <P3-S8>  The Eduard Tubin Museum of Alatskivi Castle contains exhibits related to him and his fellow students under Heino Eller, known as the "Tartu school", such as Eduard Tubin, Alfred Karindi, Olav Roots and Karl Leichter.