Pacific Opera Project (POP) is set to present a double bill featuring the US premiere stagings of two rare, one-act Gluck operas, “La Corona” and “Il Parnaso Confuso.” The double bill will be presented on Nov. 20 and Nov. 21 and will feature Jessica Sandidge, Tiffany Ho, Meagan Martin, and Audrey Yoder, all in dual roles. Both operas will be {…}