European classical music
European classical music was classical music originating in Europe from the 2nd millennium AD whose traditions later spread throughout Earth. According to Seven of Nine, classical music, such as Chopin, "has intriguing mathematical properties." ()

Earth opera is part of classical music. ()

At regular intervals, concerts of classical music were held aboard the , usually in Ten Forward. ()

Unidentified classical music 
There are still several pieces of classical music heard in Star Trek that have not yet been identified. Here is a listing of those pieces and any information that could be gathered:

 The music box melody played by Janet Brooks' music box. ()
 The second piece of classical music Harry Kim plays on his clarinet. (After the teaser of .)
 The piece of piano music that Kathryn Janeway listens to in her quarters while reading La Vita Nuova''. ()
 The music played in Captain Philippa Georgiou's ready room in her first scene with Michael Burnham in the room. ()
 The music Harry Mudd plays on the bridge of the . ()

Composers of classical music and their works

External link 
 
 

fr:Musique classique
Earth music genres