revision preference src: It is Billie Holiday who was, and still remains, the greatest single musical influence on me. Billie Holiday is unquestionably the most important Billie Holiday on American popular singing in the last twenty years. <SEP> tgt: It is Billie Holiday who was, and still remains, the greatest single musical influence on me. Lady Day is unquestionably the most important influence on American popular singing in the last twenty years.