Answer by taking a quote from the following article:

Previn was born in Berlin, Germany, the son of Charlotte (nee Epstein) and Jack Previn (Jakob Priwin), who was a lawyer, judge, and music teacher. He is said to be "a distant relative of" the composer Gustav Mahler. However, in a pre-concert public interview at the Lincoln Center, in May 2012, Previn laughed at the suggestion that he is related to Mahler. The year of his birth is uncertain.

Previn's recording repertoire as a conductor is focused on the standards of classical and romantic music, with notable exceptions like Anton Bruckner, most of Gustav Mahler and opera in general, instead favoring the symphonic music of contemporaries like Hector Berlioz, Johannes Brahms and Richard Strauss and with a special emphasis on violin and piano concertos and ballets. Just very few recordings deal with music before Joseph Haydn and Wolfgang Amadeus Mozart (both favourites of Previn's programmes) or contemporary avant-garde art music based on atonality, minimalism, serialism, stochastic music etc. Instead, in 20th-century music Previn's repertoire highlights specific composers of late romanticism and modernism like Samuel Barber, Benjamin Britten, George Gershwin, Erich Wolfgang Korngold, Serge Prokofiev, Serge Rachmaninoff, Maurice Ravel, Dmitri Shostakovich, Richard Strauss, Ralph Vaughan Williams, Harold Shapero and William Walton.  His recordings of works by Gershwin, Korngold (especially the Violin Concerto in D major op. 35, which he recorded three times with Itzhak Perlman, Gil Shaham and Anne-Sophie Mutter), Prokofiev (esp. the 5 piano concertos with Vladimir Ashkenazy and the LSO, Romeo and Juliet op. 64 with the LSO, and the Symphonies 1 and 5, the score to Alexander Nevsky, and the Symphony-Concerto for Cello & Orchestra with Heinrich Schiff as soloist with the Los Angeles Philharmonic), Rachmaninoff (esp. the Symphony No. 2 E minor op. 27 and The Bells op. 35), Shostakovich, Richard Strauss (esp. the recordings of all tone poems with the Vienna Philharmonic) Tchaikowsky (esp. the three ballets Swan Lake, The Sleeping Beauty, and The Nutcracker), Vaughan Williams (a complete cycle of the nine symphonies for RCA), and Walton (esp. the Symphony No. 1 B-flat minor and Belshazzar's Feast) have been particularly prized.  Previn recorded mostly for EMI, Telarc and Deutsche Grammophon.

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