I’m getting ready to watch (on TV, unfortunately) the Nashville Symphony play Gershwin under the baton of its new conductor and music director: Nicaraguan-born, Costa Rica-raised Giancarlo Guerrero. (Technically, for contract reasons, he is conductor-designate this year and will become conductor a year from now.) And I love the new ads the symphony is running to introduce him. One will appear above the jump; the other three below.