It is also called Philharmonic Orchestra to denote a wide ensemble of musical instruments. Usually, the Symphony Orchestra have more than 10 musicians who are all dressed in formal attire. They say that the attire adds to the harmony. The main genre of the symphony orchestra is classical because that is the direction of their instruments the string quartet, the wind and even the percussion – they all add up to the music that the orchestra can produce. But the symphony orchestra is vanishing because it is not popular anymore and it is so expensive to maintain such a big group of musicians.