Arthur James Johnston (January 10, 1898 – May 1, 1954) was an American composer, conductor, pianist and arrangerBorn in New York City, he began playing piano in movie houses, and went to work for Fred Fisher's music publishing company at the age of 16. He met, and was soon hired by, Irving Berlin, becoming Berlin's personal arranger, and director of early Music Box Revues. His first hit song was "Mandy Make Up Your Mind", co-written with George W. Meyer, Roy Turk and Grant Clarke for Florence Mills to sing in the show Dixie to Broadway.