There’s a new rock quartet in town whose sophisticated pop may include your next breezy summer melody. You can go ahead and thank Northern American for songs like the shimmering “Record Forever” to go with your ice-cold beer beside the pool and the bluesy “Don’t Be a Star” to go down with that warm whiskey as you look over L.A.’s nightscape. They should know a good soundtrack to the City of Angels after all; Nate Paul, Shane Alch, Augusto Vega and Bruno Calenda all grew up in L.A. and after playing together for three years, they’ve finally released their debut EP, “Happiness Hungover,” with a lending hand from Norm Block (Plexi) on production. This isn’t noise-rock, but it’s deliciously smooth. A full-length by Northern American is in the works.