Degenerate music is a term used by the Nazis long, long ago during World War II to describe any type of music that they didn't like or approve of. They thought that the music was too weird, too crazy, or too modern. They also thought that the music was played or created by people who were not German or of a different race.
This music could be jazz, classical music, or anything else that the Nazis didn't like. They also didn't like music that talked about things they didn't like, such as love, happiness, or freedom.
The Nazis did not like the music because they thought that it would cause people to rebel or think independently. They believed that people who listened to this type of music were bad and could be a danger to society. Therefore, they banned the music and made sure that people could not hear it.
Although the term "Degenerate music" was used to describe music during a specific time in history, it is still sometimes used today. However, now people use it to study and understand how the Nazis and their beliefs affected music during that time.