The 19th century was a fertile period for the orchestra. Woodwinds were increased from two to typically three or four of each instrument, and the brass section was augmented by a third trumpet, third and fourth horns, and the inclusion of trombones.Composers such as Hector Berlioz, Richard Wagner, Nikolay Rimsky-Korsakov, and—into the 20th century—Richard Strauss, Gustav Mahler, and Igor ... More @Wikipedia
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