Tenor Alek Shrader and mezzo-soprano Daniela Mack have enormous operatic careers and have sung all over the world both individually and together. The couple has joined forces in such operas as “La Cenerentola” and Handel’s “Partenope” and this summer they will be reunited in Handel’s “Alcina” at Santa Fe Opera. I had the chance to speak with them on my {…}