Bobbie Lee Nelson, performing in Spicewood, Texas in Mar. 2015. Nelson died Mar. 10, 2021 at the age of 91. Rich Fury/Invision/AP hide caption toggle caption Rich Fury/Invision/AP Culture Bobbie Nelson, a country music pioneer and Willie Nelson's sister, dies at age 91 March 11, 2022 The pianist was a rarity: a female instrumentalist in a honky-tonk band. Though she only recorded one solo album, she played and recorded with her brother for decades. She died Thursday at age 91.