#BoySingerSunday - Johnny Crawford Johnny Crawford is best remembered for his role as Mark McCain on the televison series, "The Rifleman" as well as being an original Mouseketeer. Johnny is also a gifted singer and musician who had four Billboard Top 40 hits in the early 1960s, but later followed his passion for jazz and the Great American Songbook. Since 1992 he has led his own vintage dance orchestra, The Johnny Crawford Orchestra. Here is a 1989 clip of Johnny performing as a quartet on the T