Classical music voice teachers or from completion of a formal program offered by a Conservatory, college or university, such as a Bachelor of Music or Master of Music degree (which includes individual lessons from professors). In classical music, "...extensive formal music education and training, often to postgraduate [Master's degree] level" is required. Performance of classical music repertoire requires a proficiency in sight-reading and ensemble playing, harmonic principles, strong ear training (to correct and adjust pitches by ear), knowledge of performance practice (e.g., Baroque ornamentation), and a familiarity with the style/musical idiom expected for a given composer or musical work (e.g., a Brahms
Classical music include the "Dies irae" from the Verdi Requiem, Edvard Grieg's "In the Hall of the Mountain King" from "Peer Gynt", the opening bars of Beethoven's Symphony No. 5, Wagner's "Ride of the Valkyries" from "Die Walküre", Rimsky-Korsakov's "Flight of the Bumblebee", and excerpts of Aaron Copland's "Rodeo". Several works from the Golden Age of Animation matched the action to classical music. Notable examples are Walt Disney's "Fantasia", Tom and Jerry's "Johann Mouse", and Warner Bros.' "Rabbit of Seville" and "What's Opera, Doc?" Similarly, movies and television often revert to standard, clichéd excerpts of classical music to convey refinement or opulence: