Hello, it's Adele. Or is it Sam Smith?
The internet is full of conspiracy theories, but this latest one is definitely something else - Sam Smith and Adele are the same person.
The theory has gone viral on Twitter as one user discovered that when you slow down the vinyl edition of Adele's 2015 hit song 'Hello', it sounds quite a lot like Sam Smith.
And it isn't just that one Adele song...
The internet has now come alive with this theory, as people have noticed Sam Smith and Adele have never been photographed together, and that their music has never been release at the same time.
No matter what you think of the theory - think that's plenty of internet for today.