“Klea Blackhurst will perform her one-woman show featuring tunes made famous by Ethel Merman at The Glimmerglass Festival on Sunday, July 28, at 6:00 p.m. Additionally, Blackhurst will portray Parthy Ann Hawks in the Festival’s performances of Show Boat, running July 6 through August 24. Blackhurst replaces Christine Ebersole, whose commitments have changed this summer due to professional reasons, including her role in the new CBS comedy series Bob Hearts Abishola,” a press release from Glimmerglass helpfully informs us.