Human: What are the main differences between a symphony orchestra and a chamber orchestra? Assistant: 
The main difference between a symphony orchestra and a chamber orchestra is that a symphony orchestra typically consists of around 80-100 musicians, while a chamber orchestra usually has fewer than 30. A symphony orchestra also tends to be larger in size and more complex in terms of instrumentation, with string instruments such as violins, violas, cellos, and basses being used along with woodwinds like flutes, oboes, clarinets, and saxophones. Chamber orchestras tend to focus on playing smaller works for strings or piano and may have less variety in their instrumentation.