Classical music can also be referred to as art music, serious music, or traditional music. It is a genre of music that dates back centuries and is often associated with composers such as Mozart, Beethoven, and Bach. Other synonyms for classical music include orchestral music, chamber music, symphonic music, and opera. The term "classical" is often used to describe music that is produced with a particular form and structure, as opposed to popular music that is typically less structured and more accessible to the masses. Classical music is known for its complexity and richness, and its appeal to those who appreciate music as an art form.