 Zimmerman is the first pianist to have recorded the complete works (66 rags on solo piano) of Scott Joplin and in 1987 was awarded the first place prize “Champion Ragtime Performer of the World”.Zimmerman was technical advisor for the films "Scott Joplin" and "Scott Joplin, King of Ragtime Composers".He is a founder of the "Maple Leaf Club", and is the editor of its publication, ""The Rag Times"".