As the coronavirus pandemic continues to complicate making new episodes of this popular, intimate music series, the newly produced "Stevie Ray Vaughan: A Retrospective" delivers an hour of vintage Vaughan appearances on "Austin City Limits" with his band Double Trouble. Although his mainstream career only spanned seven years before his untimely death in a 1990 helicopter crash at age 35, the late Texas blues rocker is widely regarded as one of the most iconic and influential musicians in blues history. Songs include "Pride and Joy" and "Texas Flood."