Must be the water. Maybe the air. Or it could be the vibe one gets from jumping in the ocean. Whatever it is, musicians from Asbury Park seem to be a breed of their own. Meet The Brothers Union. With overtones of Blink 182 or The Gaslight Anthem, their new “Mama Tried” (Clover Hill Records) is not a cover of the 1968 Merle Haggard classic, about a son apologizing for his life in prison. It’s an ode to the wisdom of their mother, not her failures.