Hanson's new album, 'Red Green Blue,' is out now.
Plus, an ET exclusive performance of their new track, 'Write You a Song.'
Isaac, Taylor and Zac have 15 children between them.
Hanson opens up about their new album, ‘Against the World,’ and their personal lives.
ET caught up with the famous brothers to chat about the history of their band and their families.
Taylor, Zac and Isaac Hanson open up to ET about marrying fans of the band and their “bucket list” project for 2018.
In honor of the band's 25th anniversary, Hanson sat down with ET to talk about the milestone and what's coming up next.