1. A genre of music characterized by formal styles, complex compositions, and sophisticated instrumentation, typically composed during the Classical period (roughly 1750-1820) or written in that style
Mozart and Beethoven are famous composers of classical music.
Mozart e Beethoven são compositores famosos de música clássica.
2. More broadly, any serious or art music composition that is formally structured and performed by orchestras, chamber ensembles, or soloists
She enjoys listening to classical music while studying.
Ela gosta de ouvir música clássica enquanto estuda.