Hanson celebrate Siblings Day, "MMMBop" at 20

April 10, 2017 -- 6:00 am PDT

Two decades following their debut, Hanson (Isaac, Taylor and Zac Hanson) discuss the breakout success of their GRAMMY-nominated global smash, "MMMBop," and — in honor of National Siblings Day — what is truly valuable about being a band of brothers.

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