You can measure the duration, key, BPM etc and publish that which are all facts. A recording of a song (even if it falls under fair use) is not a “fact”, it’s

You can measure the duration, key, BPM etc and publish that which are all facts. A recording of a song (even if it falls under fair use) is not a “fact”, it’s information that took creativity to produce, multiple people working independently would not produce the same exact song - unlike going around and measuring the height of bridges where if multiple people did it they would arrive at the same measurement