Suno - a company that trained on "essentially all music files of reasonable quality that are accessible on the open Internet", and argues it does not need to pay to do so - is now valued at $5.4 billion.

They will pay for GPUs, and for engineers, but not, apparently, for the music they use - other people's music - without which their models would not work.

I know lots of musicians who will be upset. I am with them.