Thankyou to all those who have responded to my first call on this subject. Just to clarify what we are looking for - it is precisely those short vaudeville segments in an otherwise all-film programme that we are interested in (like those described by Cal Pryluck). In Australia, some cinemas used these live prologues and interludes throughout the twenties and even into the early thirties. The suggestions so far have been really helful, and thankyou to everyone who posted. Maybe this explanation might even bring some more... Ina Bertrand