Persistence — a recurring theme in Austin Gilliam’s music — has been a defining element of the Texas artist’s character since childhood, and fueled his transition from ubiquitous sideman to songwriter fronting his own band across the Lone Star state’s vital music scene. In the predominantly country music community where he “made his bones,” the brawny guitarist has resolutely blurred the lines dividing country and rock to establish his personalized “Americana rock” style. Now, two years after the pandemic canceled all his gigs, he is finally releasing his hopeful singles “Brother” and “Buying Time” and making plans for the future.