[senko]

> allow access to our songs for AI training purposes if the artist/writer so desires

This (a) means nothing since the copyright holder can already do whatever they want, including licensing the works for any purpose; and (b) is even more restrictive than compulsory licensing which require the copyright holder to license (at a fee) the work.

The solution you describe as a win-win would either create a quagmire of crisscrossing licensing deals (AI need a lot of input, you can't train them on one artist), or in effect create an impenetrable moat for mega corporations such as Disney or Sony who would be the only ones with enough heft to pull it it.

It's actually a lose-lose situation.