BLAKE SHELTON and GWEN STEFANI recorded a song together while quarantining.  It's called "Happy Anywhere" . . . and they'll debut it on the "Today" show this Friday.

Blake said, quote, "We've all been in quarantine and lockdown . . . and hopefully we've been doing that with somebody that we really love and enjoy being around.  That's what happened with me and Gwen this summer, and this entire year."

Before COVID-19 became a global pandemic, Blake and Gwen teamed up for a ballad called "Nobody But You".  It became Blake's 27th #1 hit, and Gwen's first on the country charts.