The Philipine composer Cornejo received his Teacher’s Diploma in piano (1930) and Teacher’s Diploma in science and composition (1930) from the Conservatory of Music, University of the Philippines. He received his Bachelor of Music major in piano and theory (1932) from the Chicago Musical College of the Roosevelt University, Master of Music major in composition-conducting (1933), and Doctor of Music (honoris causa, 1954). He received his Doctor of Philosophy major in composition from the Neotarian College of Philosophy in Kansas City (1947). He served as pianist-director of a USO concert unit that entertained the Allied Forces at the E.T.O., the Marianas, and the Hawaiian Islands in World War II. Since 1978 he held concerts in the United States and appeared as composer-conductor at the Seattle Opera House and the Seattle Playhouse.