... trumpets was now often included. For some time, this formation of orchestra was accepted as standard, and is often called the 'Classical orchestra'. Mid 19th century During this time the size and range of the orchestra increased. Trombones were now regularly used and the number of horns used was increased to four and the brass section was now complete with the addition of a tuba. This section now took on far greater importance as its range and flexibility was increased by the invention of the valve system. More woodwind instruments, such as the piccolo, cor anglauis, bass clarinet and double bassoon, - were now available and the choice of percussion instruments became more varied. The number of string players was necessarily increased in order to keep a balance of sound. Late 19th century to the present day The orchestra was vastly expanded at the beginning on the 19th century and now included extra ...

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