JOLSONMANIA ! A celebration of the life and legacy of Al Jolson.
Studio 20th Century Fox
Running Time 84 minutes
Production September - October 1939 
Release 29th December 1939
Director Sidney Lanfield
Producer Darryl Zanuck
Screenplay John Taintor Foote, Philip Dunne
Choreographer Nick Castle, Geneva Sawyer
Conductor Louis Silvers
Major players

Stephen Foster - Don Ameche

Jane McDowell - Andrea Leeds

E.P. Christy - Al Jolson

Henry Kleber - Felix Brossart 
Jolson Songs

Oh Susanna

De Camptown Races

My Old Kentucky Home

Old Folks At Home (Swanee River) 
Background
A real professional Jolson turned in a great performance in this biopic of Stephen Foster despite the fact his marriage to Ruby was breaking up during the production. 
Reviews

An unimpressive story, will hit profitable but not big box office.(Variety)
Verdict
A competent biopic (certainly no worse or less accurate than many musical biopics of the period) Swanee River really only sparks to life when an effervescent Al sings as E.P Christy (the minstrel impresario who sang many of the Foster ballads for the first time).