|Published:||May 29, 2013 11:18 AM EDT|
|Updated:||May 29, 2013 11:18 AM EDT|
The Mmmbop boys of Hanson have been singing together for 21 years.
A new beer called Mmmhops is coming out this fall to celebrate the milestone, and the brothers are also helping out tornado victims from their home state.
All proceeds from Mmmhops merchandise will be going to the Red Cross.