Classical music is another huge genre, but most people think of the piano or symphony orchestra driven chamber music written by people such as Bach, Beethoven
, and other big names. It usually either gets used to indicate something as being before the 20th century in either setting or tone. Often gets used to show a character as being either not with the times or otherwise old fashioned to the point of stodginess. If your story features criminals, expect to see it indicating stuff related to the Italian Mafia.
- In The Talented Mr. Ripley, the title character listens to classical music almost exclusively. It's used as a contrast to the Jazz that the other characters listen to.
- Princess Tutu - if it's a classical song from a ballet, it's in here. Even the few pieces composed for the show are heavily based on famous German ballet pieces.
- Both Neon Genesis Evangelion and RahXephon use classical music to connect elements to the villianous races.
- 99% of fantasy uses classical music.
- Alex in A Clockwork Orange is consistently characterised with classical music, his second favourite thing after raping and murdering - it reflects his extreme intelligence as well as a fundamental part of his identity. After experiencing The Ludovico Technique, his predilection towards violence is gone, but he can no longer hear his favourite music without experiencing excruciating pain.