Wallace Earl De Pue was born October 1, 1932, in Columbus, Ohio, to Oscar and Lillian De Pue. By age seven, he was considered musically gifted. His cousin, Johnny Murphy, taught him to tap dance. Since Wallace possessed an extraordinary singing voice, he was featured in dance reviews and amateur shows as a boy soprano. In the fifth grade, he attended the Columbus Boy Choir School, now known as the American Boy Choir School. Concurrently, Eldon Howells and Frank Murphy taught him to become a concert pianist. In the 1950s, he won contests to appear on the Arthur Godfrey and Horace Heidt nation-wide talent shows.
At Ohio State University High School, Wallace studied oil painting. He also learned about script writing and wrote a series of radio shows that were broadcast over local radio. In addition, he wrote his first operetta libretto and also composed music for his class graduation ceremony.
Capital University accepted Wallace De Pue. He completed two bachelor degrees within five years, one in music education (BME) and another in music composition (BM). At Ohio State University, he completed a Master of Arts degree (MA). He earned a Ph.D. in music composition and theory at Michigan State University. Dr. H. Owen Reed was his major professor.
High school choral music positions in Leetonia, and Dover, Ohio, respectively, provided Wallace De Pue with teaching experience. His next position was as Curator of Music at The Toledo Museum of Art (Toledo, Ohio).
In 1965, Wallace De Pue married Linda Kallman, a fine pianist and music teacher. In 1966, he joined the faculty of Bowling Green State University in Bowling Green, Ohio. More than fifty of his works (for nearly all media) have been carried by other publishers, besides Picardie Court Publications.