Task: Explanation
Input (English): Francesco Maria Scala (1819 – 18 April 1903) also known as Francis M. Scala, was an Italian-born naturalized American military band director and musician. He was the first and one of the most important and influential directors of United States Marine Corps (USMC) Band. He defined the instrumental organization that the band maintains, he was an extremely prolific musician and composer, and improved and enlarged the repertoire of the ensemble. It is thought that under his direction the USMC Band executed for the first time the melody "Potpourri-Fantasie" from the opera Geneviève de Brabant by Jacques Offenbach. This melody is now known as the Marines' Hymn. Question: What melody from the French opera "Geneviève de Brabant" is used by Western Illinois University before all of it's football games and the United States Marine Corps as it's military hymn? Answer: "Potpourri-Fantasie"
Output (English):  It is thought that under his direction the USMC Band executed for the first time the melody PotpourriFantasie from the opera Geneviève de Brabant by Jacques Offenbach.