As a child, Mancini learned how to play a variety of musical instruments and as a teenager, he became enamored with jazz and big bands. He began to write arrangements and sent a few to Benny Goodman, who wrote the teenager back, encouraging him to pursue a career in music. Mancini enrolled in the Julliard School of Music in 1942, but his studies were cut short when he served in the military during World War II. After the war, he was hired by Tex Beneke, the leader of the Glenn Miller Orchestra, as a pianist and arranger. In the late '40s, he began writing scores for record and film studios, first for a recording session by the Mel-Tones, which featured his wife Ginny O'Connor, and then the Abbot & Costello film Lost in Alaska, the first movie he scored.