What instruments are in the Chicago Symphony Orchestra?

Answer 1

• Parts of the orchestra

Violin, Viola, Cello, Bass, Harp

Flute, Piccolo, Oboe, English Horn, Clarinet, E-Flat Clarinet, Bassoon

Horns, Trumpet, Trombone, Tuba

Timpani, Percussion, Piano

Answer 2

This orchestra, and most, if not all, others use pretty much the same compliment of instruments from all four families: strings, woodwinds, brass and percussion. What determines which instruments (and how many of each) are used in a particular composition is what the composer has specifically called out to be used. Each composer envisions his/her piece with a certain array of instruments, so there is really no "standard" configuration that is generically applied to all composed pieces.