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There Have Been Some Weird Music Collaborations — What's The One That Caught You The Most Off Guard?

Wait, WHO is on that track?!

If you're a music lover, you know that every once in a while you come across a musical collaboration that has you like:

Maybe Lil Nas X and Billy Ray Cyrus teaming up on "Old Town Road" caught you off guard.

Billie Ray Cyrus perform the song wearing flashy suits and cowboy hats on the Grammy Awards

Or maybe — going back a little further in the past — you were shocked to see Eddie Murphy and Michael Jackson team up for "Whatzupwitu."

1990s era Michael Jackson sings in the video next to a tank-top wearing Eddie Murphy

Perhaps you could not have predicted in a million years that Lady Gaga would record an entire album and tour with then-88-year-old crooning legend Tony Bennett.

Tony Bennett wears a sharp suit and Lady Gaga wears a beautiful dress as they sing close together

Or maybe it was the song "FourFiveSeconds" — where Rihanna teamed up with Kanye and Paul McCartney — that had you going, "Wait, WHO is on the track?!"

The black and white music video for the song featuring McCartney on guitar, and Rihanna and Kanye singing

Now it's your turn! Share your favorite totally unexpected musical collaboration in the comments (and why it was so unexpected) and it could be featured in a future BuzzFeed Community post!