I'm looking for an album I saw in a store or something, and I am having trouble figuring out who it was by.

It was sort of an album-length project where a metal band collaborated with a female singer (who has a career of her own). They might have done two albums together. I think one of them had a tree on the cover. The name might have started with a Y? But I'm really not sure. Sorry to be so vague, but I think it was over a year ago when I came across this.

But if you know of any singer + metal band collaborations, that could be a great help.

Trees of Eternity might be what I was thinking of, but I'm not 100% sure. If you know of any others, I'd be delighted to check them out.

Trees of Eternity was not right. Atrocity ft. Yasmin was what I was thinking of.