With her new Lost Highway album, Middle of Nowhere , set for release on Friday (May 1), Kacey Musgraves has confirmed a robust summer/fall tour in support of it. Dates begin Aug. 21 in Chicago, which just happens to be the artist’s 38th birthday, and conclude with an Oct. 26-27 stand in Seattle. Opening acts will include Midland, Flatland Cavalry, Carter Faith, Estevie, Charles Wesley Godwin, William Beckmann, Gabriella Rose and the Brudi Brothers at various stops. Tickets go on sale to the general public on May 8 following a host of presales. Musgraves debuted a handful of Middle of Nowhere songs during a recent surprise Coachella set and will also perform May 17 as part of Prime Video’s ACM Awards. She’ll also celebrate the release of the new album with a May 3-5 run at Gruene Hall in New Braunfels, Texas. The support acts for those shows will be three Mexican-born, Texas-reared siblings who play in a mariachi band; the family was detained by ICE agents earlier this year but eventually released.…