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He also sings in autotune sometimes.
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He can also sing about bacon pancakes really well.
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She's a pretty good bass player and singer.
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Olivia Olson plays Marceline, but before that, she was the little girl from Love Actually singing "All I Want for Christmas is You."
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Doesn't she have the most beautiful voice?
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But it can also be heartbreaking.
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Although, covers like this make it worth watching the heartbreak again.
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The creators made an episode where everyone's gender was switched. Instead of Finn and Jake, there was Fionna and Cake.
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And from that, even more awesome fan stuff was made.
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And adults, too.
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