In the 1980s and 1990s, mixtapes were all the rage. For many people, putting a collection of songs that themselves spoke to the listener was the next best thing. Some songs just say everything right.

Last year, the Texan musician Bobbie Nelson died at the age of 91. Bobbie was Willie Nelson's older sister, and she was also the longtime pianist for Willie's band. Before she passed away, Bobbie ...