''I would put Boyz II Men on in my room and try to do the little runs that they do. Just stupid stuff. Vocal acrobatics that they did. I would put it on repeat. Repeat. Oh, I didn't get it. Do it again. I just kept trying, and I finally got it.''
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Justin Bieber, Amy Poehler, Jonah Hill, Carrie Underwood, Patton Oswalt, and more share music that mattered most when they were kids