[Dixielandjazz] Soprano (Ukulele) banjo movie star?

[David Richoux]

Hi all,

A caller to my radio show asked if I remembered a 1930-50s era male  
movie star who played the soprano banjo and sang. The listener said  
he was from the former Czechoslovakia and remembered seeing the films  
when he was a child. He could not remember if the person was American  
or from Europe.

I have done some web searches with no clear results.

Any  ideas?

Dave Richoux