Mountain Grass Unit at The Orange Peel plays Wednesday, December 30. Birmingham bluegrass quartet that formed in 2021. The four-piece lineup runs fiddle, bass, and traditional string band instrumentation through tight vocal harmonies and fast picking. The Orange Peel sits right on downtown Biltmore Ave and tends to be the first calendar locals pull up when they're looking for what's happening. The standing-room floor fits around 950 and the sound system hits hard enough that national routing acts treat it as a proper anchor stop in the region.