Garth Brooks shipped a new single—“All Day Long”—to country radio and Amazon Music on June 19. Co-written by Garth, Mitch Rossell (“Ask Me How I Know”) and Bryan “Chuck” Kennedy (“American Honky-Tonk Bar Association,” “The Beaches of Cheyenne’’), “All Day Long” is the lead single from Garth upcoming 2019 album. Garth says the new single…