I wonder whether any folk music devotees can identify several figures in the post-World War II short film *To Hear Your Banjo Play*. The film can be viewed on youtube at: https://www.youtube.com/watch?v=l2iOqctAtGU The figures whom I cannot identify are: a) the singer of *What Wondrous Love* (starting at 6:21); (b) the two instrumentalists with Pete Seeger at 12:40, and (c) the square dance caller, probably a member of Margot Mayo’s American Square Dance Group (starting at 12:50). Also, was this made for the educational market? Any details about the production would be appreciated. Best wishes, Richard Markowitz