An orchestra is a group of people with instruments that make music together.
There are many types of orchestras - harmonies, jazz orchestras, bands, gypsy orchestras, poporkesten and, of course, symphony orchestras.
The difference is the type of music they play, and also to the composition, ie the instruments are inside.
Here we will talk about the symphony orchestra: A symphony orchestra consists of four groups of instruments: the strings (violins, violas, cellos and double basses), woodwinds (flutes, oboes, clarinets and bassoons), the brass (horns, trumpets, trombones and tubas) and percussion (timpani, bass drum, xylophone, cymbals, etc.).
This composition of instruments originated just over 300 years ago, and is later to be called “symphony".
The orchestra used to be consisted of about 30 musicians. Over the years it has steadily increased - now there are sometimes over 100! The orchestra is a musician without an instrument: the conductor.
The conductor decides how the song is played: faster or slower, louder or softer, very fierce or perhaps very mysterious. If he was not there, every musician perform in a different way to play, and it would be a mess!
It’s good to stay together, and to play in the same way, so they must look very carefully at the conductor: which he gives everything to do with his gestures.
If you think in a symphony orchestra, you think mostly in a "classical" music. (If you really pay attention, you will notice that the music for many films and even cartoons, often played by a symphony orchestra.) From the Baroque composers have written music for a lot - composers such as Bach, Haydn, Mozart and Beethoven.
Even composers which living today they write music for the same composition of instruments.
This is the special features of classical music is that even after 300 years is still widely played!
For more information on Symphony please visit http://www.symphony.net/