An American Airlines music spotlight in August, Toronto-based singer/songwriter Roxanna talks on the heels of her debut release, “Exotica,” which features Chris Botti and was produced by Mark Portmann, whose credits include Christina Aguilera, Josh Groban, and Celine Dion, among others. Roxanna also tells of getting a well-known actor for one of her music videos, how being a nurse led to her music career, and her upcoming PBS special.