Aww, he's so beautiful. He also kind of sounds like a record being remixed by a DJ. Like you have repeating short combinations of sounds, and he sounded like a record scratch at a few points. I don't know if that makes sense.
I’ve never heard a finch sound like that before in my life. That it amazing. My brother had one just like it too. Little cuties. I wonder if he was getting protective over a mate or something.