PONCA CITY, Okla. – (February 28, 2024) Professional Broadway veteran and Irish singer, David Shannon, blends the Broadway standards of his career with the unique sounds of his heritage in a special concert at The Poncan Theatre on Thursday, March 14, 2024 at 7:30 p.m. David Shannon grew up in Ireland and has been singing professionally for more than 25 years, David is renowned for his engaging…