Instruments of the orchestra

Here is my power point for my group:

There are four families of the orchestra and they are:
Brass
Woodwind
Strings
Percussion (it is seperated into two which are: un tuned percussion and tuned percussion)
The families join together to make an orchestra which is a group of people with many different instruments from these families. They have a leader which leads them with his hand gestures.

Percussion Family