After 64 weeks, Locash’s “One Big Country Song” has reached No. 1 on the Mediabase chart. Penned by Jesse Frasure, Ashley Gorley and Michael Hardy, “One Big Country Song” is featured on Locash’s 2019 album, Brothers. The 11-song offering was the first album on the duo’s new label, Wheelhouse Records/BBR Music Group. “Thank. You. Country.…