Simplify the following text for a Grade 9 native English-speaking person.
Original: Aside from these , the orchestra consists of pairs of flutes , oboes , clarinets , bassoons , horns , trumpets , a set of two timpani , and strings .
Simplified: The main orchestra has pairs of flutes , oboes , clarinets , bassoons , horns , trumpets , a set of two timpani , and strings .