Ok, after some trial and error, I think I figured this out. I told ChatGPT to write a 4-note beat directly into MusicXML code. Then I uploaded that code to NoteFlight to generate the score. You can have NoteFlight then play it or play it yourself. Success!

The instructions and output:

I copied the XML code (upper right link) into a txt document. I changed the extension of that txt document to .musicxml. Then went to NoteFlight and created a new score by uploading the .musicxml file.

The resulting score: