“Tito Muñoz, who currently serves as music director of the Opéra National de Lorraine and Orchestre Symphonique et Lyrique de Nancy in France, will take the baton at Phoenix’s Symphony Hall for seven classics concerts in the 2014-15 season. A native of Queens, N.Y., he is 30 years old — the same age of his predecessor, Michael Christie, when Christie came to the Valley in 2004.”