Dover, who competed on "The Voice" in 2019, previously signed to UMG Nashville as well as Sony Music Publishing Nashville and Droptine.
The four-date run, produced by Guthrie and wife Marti Ladd, was designed to facilitate the folk singer's recovery from a 2019 stroke.
The two singers first connected at the Nashville Songwriter Awards back in September.
The star is currently getting ready to close out her first leg with two shows in Los Angeles.
Economic forecasts look bleak, but live-industry experts still expect to see global growth in 2023.
High stress levels and razor thin profit margins have led to an "extraordinarily challenging time" for some artists.
The 21-city tour will kick off on July 24 and stay on the road through October.
While concert giants are bullish about the coming year, the rough economic climate puts emerging acts at a disadvantage.
"It's a very difficult decision to come to," founder Mick Jones tells Billboard.
The trek's openers include Elle King, Charley Crockett and Drive-By Truckers.
