[zhinit]

For 1) another commenter had a simmilar idea. I think a GAN would be able to do this. It's just a matter of collecting the data

For 2) SUNO's stem separation is pretty good. The open sources ones (like spleeter) are also not bad, but they are pretty hit or miss.

For 3) This is a really cool idea. The deep dream images produced the fur and eyeball textures because they used imagenet data which had a bunch of dogs and other animals in it. The trick would be finding a good data set to use for this. May be there is a public source of animal sounds floating around you could try this with.

And yeah think people 100% generating songs is pretty wack, but I could see why it would be fun to someone who is not a musician.