The symphony orchestra is a union of all instruments. The symphony orchestra has a many section.

The principal section is a strings.The section strings has a 4 different instruments: Violin Viola Cello ContrabassThe violin section has 2 groups: vln 1st, and vln 2nd. They play the melody.The viola section has 1 groups and they play harmonyThe cello section has 1 groups and they play melody or harmonyAnd contrabass has 1 groups and they play the low of harmony

This section is a very large because have many players.

Other section, very important in the orchestra is a woodwind.This section has 4 family different. These families are: Flutes Oboes Clarinets BassoonThe flutes has the sharpest instruments, and play melody with vln 1st. This section has 2 instruments: flutes and piccoloOthers instruments of family flutes are flutes in G

Others family of woodwinds is a oboes. The oboes has 2 players in orchestra and its sounds a very nasal. Also, other instruments the oboes are a English horn, and sounds in E b.

Others section of woodwinds is a clarinets.The clarinet has 2 players in orchestra and its sounds a very warm. Clarinets and oboes are instruments middle register.Also, in this section, have others instruments as clarinet requinto and bass clarinet.

The section very bass is a bassoon. They have 2 players in the orchestra and they play the bass of harmony. Also, this instruments have others lower: contrabassoon.

The family of metal is a very bright, and have 4 different instruments: Trumpet Trombone French horn Tuba The trumpet is a instruments very bright of the family. This instrument have pistons or valvules. These instruments have different sounds: C Bb and Eb.

The trombone is a instruments tenor, within of family of metal. These instruments have slide to play the different notes. The instruments have different sound: Bb and 1 rotor to change notes.

The French horn is a instruments more melodic, because this instruments play with woodwinds family. These instrument have valvules and great bell. These instruments have different sounds: F.

The tuba is a bass of brass family. These instruments is a very great and the player play notes very bass. These instrument have pistons or valvules and your sounds is C Bb or Eb

Finally, the section orchestral with many instruments to play is the percussion. They are 3 o 4 players and play different instruments your family. 1 player only play the timpani, and hes o shes timbalero, and the different player play more instruments maracas, wood block, triangle, toms

they form the orchestra, conducted by director. This gives a tempo, articulacion, signals