Quite the co-headlining bill tomorrow at the Great American. Austin's ten-piece, Latin fusion outfit Grupo Fantasma and Portland's experimental-folk, Mexican-tinged Y La Bamba will share the stage for a night of incredible, original musicianship. Intense harmonies, dozens of instruments, Spanish lyrics - it's all front and center and we've got a pair of tickets to give away. If you're the third person to email contest@thebaybridged.com, they're all yours. Grupo Fantasma has played countless major international music festivals, had their live performances lauded by the likes of NPR, and in 2011 they won a Grammy for their self-produced album El Existential. [...]