Gustav Mahler was an Austrian composer who lived from 1860 to 1911. He is best known for his symphonies and songs. Egon Wellesz was an Austrian composer and musicologist who lived from 1885 to 1974. He was a student of Arnold Schoenberg and wrote works in a variety of genres. Joseph Haydn was an Austrian composer who lived from 1732 to 1809. He was one of the most important figures in the development of classical music and is often referred to as the 'Father of the Symphony'. Alban Berg was an Austrian composer who lived from 1885 to 1935. He was a member of the Second Viennese School and wrote works in a variety of genres, including opera, orchestral, chamber, and piano music.