I hate when someone says "big artist". It's not even a clue, there's literally 100s of artists who could count as a "big artist".

You can rule out all the ones who released in the past 12 months or are with TIDAL, but it still leaves loads.
A "big artist" could be anything from a rock band from the 80's to a European dance DJ to an American country singer.
I don't mind OneRepublic, I like All The Right Moves and Counting Stars. I became absolutely sick of Apologise though, even now I still can't bear to listen to it...