Gwen Stefani recently joined her new husband Blake Shelton on stage at a country festival, as they teamed up to perform a few songs together, including a No Doubt classic. The couple tied the knot earlier this month, and they've wasted no time getting back to their careers as Shelton is even preparing to head out on a tour later this summer. Gwen Stefani, Blake Shelton Perform at Country Festival Shelton took to the stage at Country Thunder in Wisconsin over the weekend. It's the start of a long string of performances he has lined up, after not performing live for over a year due to the pandemic. Shelton welcomed his wife Stefani to the stage to perform "Don't Speak" by her band No Doubt. In a clip from the festival, the audience can be heard cheering for the singer's appearance as Shelton plays guitar on the song. Stefani went on to belt out the hit, accompanied by Shelton. When Stefani was done singing, Shelton took a moment to bow down to her while the audience applauded. The couple also reportedly sang their duets "Happy Anywhere" and "Nobody But You" during the appearance. At one point, Shelton announced to the crowd, "That's my wife and best friend Gwen Stefani, everybody!" The couple has become a https:\/\/www.youtube.com\/watch?vKo253kyZSIM SEE ALSO: BLAKE SHELTON DEBUTS WEDDING RING DURING OLE RED PERFORMANCE WITH GWEN STEFANI Shelton is Heading Out on Tour Soon Shelton is getting back to performing after a long hiatus, and he's about to head out on tour. He'll be finishing up his Friends and Heroes Tour, which was cut short by the pandemic last year. The tour kicks off August 18 in Omaha, Nebraska, and runs into October. The country star recently invited fans to watch him rehearse for his upcoming performances at The Doghouse, a venue associated with his bar Ole Red in Tishomingo, Oklahoma. Shelton will also be returning as a coach on The Voice Season 21, so he has a busy few months lined up. Stefani, meanwhile, is getting ready to return to Las Vegas for her Just a Girl residency, set to kick off October 22 at the Zappos Theater at Planet Hollywood Resort & Casino.