The 1990s boy band Hanson is turning 21: that is the brothers have spent 21 years together as a musical group. What better way to celebrate that legal milestone than with beer.

Likely the Tulsa, Okla. trio's most well-remembered tune was 1996's "MmmBop". In homage to the song, which focused on the longevity of relationships, or lack thereof (...in an 'MmmBop' they're gone...), Hanson created a portmanteau of the song title and most craft beers' main ingredient.

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Joining up with Mustang Brewery in Oklahoma to create the new pale ale, the brothers found a unique way to debut MmmHops to the public. Hanson introduced the beer at last week's premiere of the "Hangover Part III". In the movie itself, oddball character Alan (Zach Galifianakis) can be seen jamming to "MmmBop", the song, while driving a car.

Their home state was recently devastated by tornadoes, in towns like Moore, Okla., and elsewhere. In response, Zac, Isaac and Taylor have decided to donate the proceeds of all MmmHops-related memorabilia and paraphernalia, save for the brew itself, to the American Red Cross' disaster relief fund.

On the subject of the band's support for tornado victims, band member Taylor Hanson said that the brothers are "hopeful that the proceeds we can galvanize will play a lasting role in the recovery efforts."

How well is "MmmHops" expected to perform in the already-crowded domestic beer market? It's a secret no one knows.