Opera music presents unique challenges not just for the singers but also for the orchestra, and the members of the community-based New Horizons Orchestra have been working hard to prepare for this weekend’s “An Afternoon at the Opera,” says conductor Dr. Marianna Gabbi. “There will be beautiful moments -- like life!” she promises in this interview with Intermezzo host Leora Zeitlin. The program includes music by Rossini, Wagner, Bizet and Strauss, including solo arias sung by mezzo-soprano Stephanie Sanchez, a NMSU graduate who recently joined the Houston Grand Opera.