However, depending on the context, you could use these common nouns:
* Composer: This is the most general and accurate term.
* Musician: This is a broader term that includes any person who plays or creates music.
* Pianist: This is more specific, as Beethoven was a renowned pianist.
* Genius: This is a descriptive term used to refer to his exceptional talent and creativity.
* Artist: This broadly refers to a person who creates art, including music.
Ultimately, the best common noun to use depends on the specific context and what aspect of Beethoven you are focusing on.