Simon is the last name of Paul Simon, who was a singer-songwriter and musician. He is best known for being one half of the duo Simon & Garfunkel, alongside Art Garfunkel. They created many popular songs together in the 1960s and early 1970s.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Who says?. Explanations are generated by AI and may be inaccurate.