Waltham Mayor Jeannette McCarthy and members of the Waltham School Committee will host a fundraiser with proceeds to benefit the Waltham High School Music Department trip to Nashville, TN. A La Musica! - an evening of food, fund and musical festivities features a traditional spaghetti and meatball dinner served by the Mayor and School Committee members at the Waltham High School on March 4th. During the dinner a variety of musical selections will be performed by several WHS musical ensembles.