The Knock by Aleksandra Vrebalov (libretto by Deborah Brevoort) is an hour-long emotional countdown as three women await news of their husbands stationed in Fallujah, and one gets the bad news. Cincinnati Opera presented the stage premiere in June with a superb production directed by Alison Moritz and riveting performances from its ensemble cast. This powerful work left audiences in tears, especially veterans who attended special performances. cincinnatiopera.org.