When I first brought tabby to live in an apartment with my old roommate, she made really weird noises.
She got old while I was away getting my first degree. So she had developed an "old cat voice" that was very distinctive.
Me and my roommate used to joke that we should record her noises and upload them to a public domain sound bank.
Who knows what people might want to do with old cat noises.
Well, now that Tabby doesn't have much time left, I splurged and bought a snowball blue microphone to record her noises.
I've got a few high quality squeak sounds. And I have several recorded minutes of her purring.