Question: What is the birthdate of this American country music and rockailly singer and musician, best known for a song winning a 1960 Grammy who was produced by Don Law?
Sentence (from "Don Law"): He produced Robert Johnson's only recordings, and as head of Columbia Records' country music division later worked with many leading country musicians including Bob Wills, Carl Smith, Flatt and Scruggs, Lefty Frizzell, Ray Price, Johnny Horton, Marty Robbins and Johnny Cash.
Relevant evidence: Yes