Symphony instruments, 19th century symphonies were gradually augmented with more string players and more wind parts, so that the orchestra grew substantially in sheer numbers, as concert halls likewise grew. At the beginning of the 20th century, Gustav Mahler wrote long, large-scale symphonies. His Eighth Symphony, for example, was composed in 1906 and is nicknamed the "Symphony of a Thousand" because of the large number of voices required to perform the work. Additionally, his Third Symphony is one of the longest regularly performed symphonies at around 100 minutes in length for most performances. The 20th century also saw further diversification in
Symphony No. 2 (Schnittke) Symphony No. 2 (Schnittke) Russian composer Alfred Schnittke wrote his Symphony No. 2, subtitled "St. Florian" and "Invisible Mass" in 1979. It is a choral symphony, written for contralto, countertenor, tenor and bass, plus chorus and orchestra. The symphony was written in homage to 19th century Austrian composer and organist Anton Bruckner, who was closely associated with St. Florian's Priory in the town of Sankt Florian, Upper Austria, and who is buried under the organ there. The symphony is written in six movements, structured after the Ordinary of the Mass of the Roman Catholic Church, and lasts approximately 60 minutes.