In this short film, prominent jazz musicians of the 1940s gather for a rare filming of a jam session. This highly stylized chronicle features tenor sax legend Lester Young.
| Actor | Role |
|---|---|
 Lester YoungSelf - on Tenor Sax | Self - on Tenor Sax |
| GGeorge 'Red' CallenderSelf - on Bass | Self - on Bass |
 Harry EdisonSelf - on Trumpet | Self - on Trumpet |
| MMarlowe MorrisSelf - on Piano | Self - on Piano |
| SSidney CatlettSelf - on Drums | Self - on Drums |
| BBarney KesselSelf - on Guitar | Self - on Guitar |
 Jo JonesSelf - on Drums | Self - on Drums |
| JJohn SimmonsSelf - on Bass | Self - on Bass |
 Illinois JacquetSelf - on Tenor Sax | Self - on Tenor Sax |
| MMarie BryantSelf - Singer and Dancer | Self - Singer and Dancer |
 Archie SavageSelf - Dancer | Self - Dancer |
| GGarland FinneySelf (uncredited) | Self (uncredited) |
 Knox ManningNarrator (voice) (uncredited) | Narrator (voice) (uncredited) |