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French fries and a chocolate shake. James Carville and Mary Matalin. College exams and cute cat videos on YouTube.

It’s these unlikely duos that inevitably end in welcomed surprises. Especially when two musicians, exploring the uncharted territory of one-another’s discography, collaborate and push the boundaries of their fan’s expectations. It’s like watching two trains race toward one another, but instead of colliding, they dance and whirl to the beats of newly merged tracks born from alternative, amenable individuality.

While it’s unlikely these collaborations will reunite anytime soon, here are the best mismatched musicians we’re currently trying to get back into the recording studio.