Who said classical music couldn’t be funny? Here is a rendition of PDQ Bach’s version of Beethoven’s Fifth Symphony. PDQ Bach is the brainchild of composer and music scholar Peter Schickele to put some fun back in classical music. You can learn a lot about the construction of classical pieces from his work.
Contemporary American composer Augusta Read Thomas’s Bassoon Concertino (2013) played by the Danish Chamber Players.
The Mozart Clarinet Quintet in A Major, K581, played by the Hagen Quartet with clarinetist Sabine Meyer.
Perhaps the greatest violinist of the twentieth century and maybe of all time, Jascha Heifetz, playing Melodie from Orphée et Eurydice by Christoph Willibald Gluck. Although the YouTube notes says it was transcribed by Heifetz, I believe this is a version transcribed by Fritz Kreisler.
Here is Chinese pianist Lang Lang playing Franz Schubert’s Serenade. I think this is probably what a Franz Liszt concert was like to a 19th century concert goer.
Evgeny Kissin (the Vladimir Horowitz of today?) plays Sergei Rachmaninoff’s Prelude in C sharp minor, Op. 3 No. 2. You’re not a true virtuoso until you go big on this one.