Birthplace of Country Music (BCM) has announced the remainder of its lineup for the 22nd annual Bristol Rhythm & Roots Reunion music festival, scheduled for Sept. 8-10 in Historic Downtown Bristol, Va.-Tenn., which includes previously announced headliners Nickel Creek, Margo Price, Bruce Hornsby & The Noisemakers, Watchhouse, The Mavericks, 49 Winchester, Larkin Poe, Allison Russell, Amythyst Kiah, and Wilderado.