Please Help

I really hope someone can help me with this, because it is driving me insane. I've become a big Kinks fan over the past couple of years, and I recently started playing "Days" a lot. Great song. But I feel almost certain that I know it from somewhere else. The only covers mentioned prominently online are by Elvis Costello and Kirsty MacColl, and those aren't the answer.

My brain is hurting because of this. If you know of any place I may have heard it -- Maybe as part of another live song by someone else, threaded in? Or maybe a cover that's more obscure, though I doubt it? -- please let me know.