Hudson – Sgt. Daniel M. Clark known as “The Singing Trooper” will perform Saturday, April 5, from 7 to 9 p.m. at Hudson High School, 69 Brigham St. Clark is best known for performing across the country and for singing? “God Bless America” on opening night of the 2013 World Series. The show, sponsored by Friends of the Hudson Library, will feature a mix of show tunes, oldies, popular standards and patriotic songs. During intermission, members of the Friends will sell refreshments and hold raffles. Tickets are $10 in advance at the library, 3 Washington St., or $12 at the event. For more information, call Cathy at 617-543-5951 or 978-562-2422.