How are the instruments in a classical orchestra used?

All four of the musical family groups are included in the orchestra. They are: 1) strings (violins, viola, cello, string bass and harp), 2) woodwind (flute, clarinet, oboe, bassoon), 3) brass...

There are a variety of instruments depending on the composer and the song. The 'usual' is cellos, violins, violas, upright bass, ect.

In the classical orchestra of Haydn, the double bass was biggest. In the 19th century, everything was to become occasionally included in orchestras, including the grand piano and the biggest...

Traditionally, the Concertmaster (usually the first chair violinist) tunes his violin to a known standard pitch like A-440 and then the other orchestral instruments tune to his or her pitch....

The instrments used in an orchestra areViolin (me:)ViolaChelloBassDouble bass