There is no more prolific composer of original stage musicals in Nashville (or many other cities) than Marcus Hummon. A highly successful Music City songwriter by all conventional markers, Hummon has spent the past decade launching more serious musical plays than most composers attempt in a lifetime, his thematic material including Jim Thorpe, Picasso, World War II and the Civil War. More recently, Hummon’s first opera, Surrender Road, was presented by Nashville Opera in a well-publicized outing that pushed the boundaries of his own musical experimentation. His latest, as did the others, should draw attention, and, interestingly, while Hummon as always provides music and lyrics, the book for this story about Irish immigrant life in 19th century Boston has a co-author, Michael Aman. Actors Bridge Ensemble has all hands on deck for this one, with co-direction by Bill Feehely and Vali Forrister, plus musical direction by Timothy Fudge and a set designed by Paul Gatrell. Hummon himself will play the accompanying score, along with John Mock and Knox Ewing. The cast of 14 includes Kim Bretton (sensational previously with ABE in Vincent in Brixton), veteran musical performers Mike Baum, Kay Ayers and Brooke Bryant and noted Nashville jazz singer Annie Sellick.