'From Katrina to Super Bowl champs, this is our story,' singer-songwriter and proud New Orleans resident Susan Cowsill writes in the credits, and she repeatedly veers between drowning and daylight, exile and homecoming, on Lighthouse, an earthy, often crunchy folk-pop gem. But Cowsill has a supple survivor's alto, and it runs like a sturdy lifeline through the silken dreaming in 'Dragon Flys,' her hard-soul resolve of 'Could This Be Home' and especially the gospel-rock liftoff in 'River of Love,' written by her brother Barry, who perished in Katrina, and sung by Susan with a heavy heart and sweet memory in the same deep breaths.