Opera America has announced its 2017-18 Onstage at the Opera Center season and it will feature quite a number of exciting artists. Kicking off on Oct. 5, 2017, the season will feature three different series, including “Creators in Concert,” “Conversations,” and “Emerging Artist Recitals.” “Creators in Concert” will feature “Thumbprint” composer Kamala Sankaram on Oct. 19, 2017. Then on Feb. {…}