According to google, its fair use
Its not fair use for you to download music and listen to it, but it is fair use for google to download it, analyze every mathematical detail about it then generate facsimiles
But, very importantly, fair use is just a legal argument, someone just needs to challenge it
If only their latest Experimental Thinking AI would slip up and spill the beans on their knowingly copyright theft, then talk about how it has built in logic to prevent stating the obvious fact