Watch on Soap2day. The amazing story of the musical "Boston Waltz," based on the hits of Alexander Rosenbaum. Behind "Boston Waltz," the musical is a vast creative undertaking, in which every scene, every rehearsal, and every decision recreates a plot woven from the meanings of Alexander Yakovlevich Rosenbaum's songs. A film about the making of the production shows how a powerful, emotional, and truly vibrant theatrical event emerges from thousands of individual fragments, resonating with audiences.