From the 2010s on, Rachel Loy has been one of Nashville’s most versatile bassists. Check her surging, darting lines contrasting Willie Nelson’s scrappy guitar on his “Delete and Fast Forward”. Dig her slow-burning soulful stroll on Charlie Worsham’s “Sugarcane”. Soak up her slippery, syncopated groove on Scotty McCreery’s “See You Tonight”. Then marvel that they all originated with the same two hands.