No Doubt: Gwen Stefani's Son Rocks Out With Mommy On Stage During Performance [Video]

No Doubt performs with Gwen Stefani's son during sound check on the Ellen Degeneres show. Stefani gushed over her 4- year old son and said, "Zuma's the one who's showing more interest in the guitar," Stefani explained. "Since he was tiny, he's always played guitar--well, he doesn't really play guitar, but he thinks he does."

The band is celebrating their 11^th year anniversary since releasing their first album and stopped by Ellen's show to introduce their new album, "Push and Shove," which will lead off with their first single called, "Settle Down" in mid- July.

Stefani told Degeneres that her youngest son Zuma was there back stage and was "Chillin out." Degeneres added, "He's calmer here than he was at my house." Stefani elaborated on Degenere's comments and said, "At her house he [Zuma] was dunking his head in ice water.

The audience saw a glimpse of the sound check with Zuma standing by his mommy strumming his black guitar and rocking a cool pair of headphones. As the crowed "Awed" a shocked Degeneres said, "Oh my God. That's Hilarious!"

No Doubt's last album was released in 2001 and reasoning for their long hiatus was because they all have been focusing on being parents. Stefani who is the mother of two - the oldest Kingston, 6, says, "It was challenging--we'd get together like three times a week, and I tried all versions--like 'oh today I'm gonna bring him with me,' and that didn't work. So then I was like 'Today I'm not gonna see him, I'm gonna work all day, and then I'll be with him tomorrow.' It was just chaos, so that's one of the reasons it took as long as it did."