【Marshall vs Gumball】 I'm My Own Problem「DUET」Adventure Time

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Duet / Mashup / EpicDuets:
www.youtube.com/watch?v=-_Sdw...

Marshall Lee / Ashe:
www.youtube.com/watch?v=aYKRR...

Prince Gumball / Caleb Hyles:
www.youtube.com/wa…