Louis Armstrong (1901-1971) had a remarkable career as a jazz musician right from its beginnings in New Orleans in the 1920s up until the 1960s. Nicknamed ‘Satchmo’ (short for Satchelmouth owing to his particular way of playing the trumpet), Armstrong was a trumpeter, singer and actor and was at the forefront of lots of new ideas, for example scat singing, which you can hear him doing in this video:
Hayes Music blog 