Arthur Pryor was only 22 when he played his first solo with the Sousa Band during the World Columbian Exposition in Chicago in 1893. According to accounts of the day, he played his own "Thoughts of Love" to a crowd who just stood in awe, then cheered and threw their hats in the air. That was the first of some 10,000 solos that Pryor estimated he played during the 12 years he was with the Sousa Band.
Thoughts of Love
Arthur Pryor