Classical

of or pertaining to or characteristic of the ancient Greeks and Romans, especially their art, literature, or culture

of or relating to the first significant period of a civilization, culture, area of study, etc.

well-known and long-established in form or style

of or relating to music in the European tradition, such as symphonies and operas

of or relating to the languages used by ancient standard authors

(physics) relating to or based on concepts that preceded the theories of relativity and quantum mechanics

traditional genre of music conforming to an established form and appealing to critical interest and developed musical taste

of or relating to the study of the literary works of ancient Greece and Rome