Armstrong's All-Stars weren't formally established until [https://en.wikipedia.org/wiki/Louis_Armstrong#The_All_Stars|August 13, 1947]. However, the band had already performed and/or recorded several concerts/sessions by then under that name: ''Louis Armstrong and His All Stars'', [http://musicbrainz.org/release-group/adfde161-2781-376c-b73e-f359cd19d347|May 17, 1947, at Town Hall, New York City] (recorded by promoter Ernie Anderson; of which only 6 songs were initially released, the rest eventually released in full in 1983 by RCA France); ''Louis Armstrong and His All Stars'', June 10, 1947 (4-track single, studio recording, Victor); and possibly ''NBC Radio Broadcast Transcription (radio)'', New York, NY; June 19, 1947, Winter Garden Theatre, New York City. addn. ref: http://michaelminn.net/armstrong/index.php?section6