Interesting

I've always wanted to make a "Klaxon" series of musics. Based around the such.

That would actually be a song, where as, like you said, you have a loop.

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A Klaxon is generally a form of siren. The distinctive noise is created by the teeth of a gear striking a fixed plate of metal, with the resonations amplified and directed by some form of horn shape.

The sounds are infamous for their usage on American WWII Submarines. The same principal is also applied with Air Raid or Tornado Alert sirens.