She made that song famous, yes. But that's it. What makes it a classic? Half of Europe has never even heard the song.
The thread was about it being an Adele classic though and no a lot of people in Europe know it are you kidding me? It's covered in almost every music show its being played as background music etc....and those who know the song most of them dont even know its a cover so it is an Adele classic deffo.