Comment by simonw

Yeah it was Suno, it's in the MP3 metadata on https://www.praf.me/audio/used-to-be-hard.mp3 :

  "tags": {
    "title": "Kubernetes Roofspin",
    "artist": "prafff",
    "comment": "made with suno; created=2026-06-08T23:11:09.140Z; id=793ca281-38c3-4cfd-96d3-ad3e82a46157",

Accessed with:

  ffprobe -v quiet -print_format json -show_format -show_streams used-to-be-hard.mp3

Full output here: https://gist.github.com/simonw/f4d82c38bad0879acfcf54bd8e61a... - turns out Suno embeds the lyrics in the metadata as well.