What makes a song a prelude?

Related questions

1. What is a Codetta in a fugue?
2. When did equal temperament start being used?
3. What is a fugue state?
4. Do grooms walk down the aisle to music?
5. Does the bride walk down the aisle to a different song?
6. Why did Wordsworth write the Prelude?
7. Who wrote the song Prelude?
8. How old was Chopin when he wrote Nocturne?
9. What does Op 9 No 2 mean?
10. What did Wordsworth write about?

Tags

1. #composition
2. #musical
3. #larger
4. #dance
5. #usually
6. #arias
7. #prelude
8. #introduction
9. #generally
10. #another
11. #forms
12. #toccatas
13. #distinct
14. #character
15. #piece
16. #inventions
17. #brief
18. #played
19. #others