John Philip Sousa’s world was a regimented one, as befitted a military band man, but when he left trombonist Arthur Pryor alone to record some “tinned music” he inadvertently created one of the most extravagant moments in turn-of-the-century music. Soon brass soloists of all varieties were competing to fill two minutes of wax with the most excessive collection of flourishes and sfx they could muster. By the late 1900s they had all apparently calmed down – but for a decade at least the peacocks were producing some of the most exciting music ever recorded.