Between 1938 and 1944, Glenn Miller and His Orchestra released 266 singles on the monaural ten-inch shellac 78 rpm format. Their studio output comprised a variety of musical styles inside of the Swing genre, including ballads, band chants, dance instrumentals, novelty tracks, songs adapted from motion pictures, and, as the Second World War approached, patriotic music. Before his popularity, in the late 1920s, Miller played or wrote arrangements for many hot jazz groups, including a stint as a trombonist-arranger for Red Nichols’ famed Five Pennies recordings.