FILE -- In a 1970 file photo Louis Armstrong is seen during a recording session in New York. A live recording of Louis Armstrong playing his trumpet for one of the last times is being played Friday ...

Behind his blistering trumpet solos, revolutionary vocal improvising and exuberant stage persona, how did Louis Armstrong see himself? What was it like to be the first pop virtuoso of the recorded era ...

Louie, LEW-iss, Satchmo, Pops – call him what you will, Louis Armstrong transformed American music with his jazz trumpet solos and signature, raspy vocals, bringing a New Orleans sound to the world.

WASHINGTON — A live recording of Louis "Satchmo" Armstrong playing his trumpet for one of the last times is being released to the public for the first time. On Jan., 29, 1971, Armstrong was a featured ...