NEW HAVEN >> Long Wharf Theatre officials are preparing for their gala Monday night, which will present 2015 Tony Award-winning Broadway star Kelli O'Hara.The 2016 Gala begins at 6 p.m. with a cocktail reception featuring a sampling of foods. O'Hara's concert follows at 8, featuring her Broadway show-stoppers and selections from the Great American Songbook in Long Wharf's 400-seat Claire Tow Stage in the C.