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, K. 135+61h (Mozart) Symphony, K. 135+61h (Mozart) The Symphony in D major, K. 135+61h, was probably composed by Wolfgang Amadeus Mozart in 1772. All the movements are from the overture to the opera "Lucio Silla", K. 135, except for the minuet, K. 61h No. 3, which was composed separately. The symphony is scored for two oboes, two horns, two trumpets, timpani and strings. \relative c' { </score> The symphony was discovered by Ernst Hintermaier in 1991. The parts he discovered were copied by Matthias Kracher, who was in close connection to Michael Haydn, but probably did not have a direct contact with the