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. 6 (Sessions) Symphony No. 6 (Sessions) The Symphony No. 6 of Roger Sessions, a symphony written using the twelve-tone technique, was composed in 1966. It was commissioned by the state of New Jersey and the New Jersey Symphony Orchestra. The score carries the dedication: "In celebration of the three hundredth anniversary of the state of New Jersey". Sessions began composing the symphony in the summer of 1965 while traveling in South America, and completed it at Tanglewood in 1966. It is the first of a trilogy of symphonies, composed in rapid succession, which Sessions associated with the Vietnam war. The premiere was