Swing era band (often called orchestras) was the most popular dance band in the world, breaking record sales and concert attendance records. This band leader developed a peppy, clean-sounding style that appealed to small-town midwestern people as well as to the big-city, East and West Coast constituency that had previously sustained Swing music. In terms of sheer popular success, this band marked the apex of the swing era, racking up 23 number one recordings in a little under four years.