A World War I-era musical that spans half a century and explores ideas of art, science, romance and revolution has to be seen to be believed. The Blue Flower, which begins performances at off-Broadway’s Second Stage Theatre on October 12, is just such a show. Broadway.com got a revealing preview of this epic piece on September 27 when the cast, including Teal Wicks, Marc Kudicsh and Sebastian Arcelus, invited the theater press into their rehearsal room. Check out of photos of the event below, then make sure to see The Blue Flower bloom off-Broadway.