"MMMBop" turned 20 this year, and if that doesn't make you feel old, then perhaps knowing the Hanson brothers behind the song have been in the music business for 25 years already will.

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Joking aside, Hanson stopped by NPR for an episode of their Tiny Desk concert series to celebrate their anniversary as a band. Taylor played the keys, Isaac guitar and Zac cajón while they gave an intimate performance of three tracks from their recently released hits album, Middle Of Everywhere: "Thinkin' Bout Somethin'," "This Time Around" and "I Was Born."

As far as what's next for Hanson, they always have their eye on the future, which this year includes a holiday album, Finally It's Christmas, set to be released Oct. 27.

"This is our 25-year anniversary, but we can't do anything without thinking about the future," said Zac. "People ask us how we stayed together as a band, and that's really the whole source of it. The future, the next thing, the next song, the next project — that's our game. That's what we're in it for."

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