"Mammy" was a fine box office success in 1930, with Jolson bouncing back from the less than well recieved "Say It With Songs". Here he plays AL FULLER as the film shows the trials and tribulations of a small minstrel troupe. The full score was indeed written by IRVING BERLIN as he also recieved screenplay credits for the film. . This is where 'Jolie' learned all the tricks of his trade in real life, starring in Lew Dockstader's Minstrels in 1909! Jolson sings 'Who Paid the Rent for Ms Rip Van Winkle with natural charge and exhuberance. The comic skit of the MINSTREL show is mimicked well as to the style of show business it portrayed; a touch beyond its time when this film was made.