Symphony orchestras are divided into woodwind group, brass group, string group, percussion group and harp.
woodwind group: piccolo, flute, oboe, English pipe, clarinet and bassoon.
copper tube group: small, French horn, trombone and large.
string group: violin, viola, cello and bass.
percussion group: percussion group is divided into pitch group and non-pitch group.
There are pitch groups: piano, Malimba, timpani and so on.
no pitch group: drum, snare drum, triangle, tambourine, castanet, etc.
Harp: The harp is the only plucked instrument in the whole symphony orchestra.