A brashly melodic indie rock outfit from Glasgow, the Fratellis seemed to emerge fully formed from the Babyshambles-inspired boho-chic scene that also spawned the Rakes and the Paddingtons. Their debut full-length Costello Music (2006) mixed the tried-and-true sounds of glam rock, stripped-down acousticisms, and Class of 1977 punk, featuring a pair of Top Ten hits in the U.K., "Chelsea Dagger" and "Whistle for the Choir." (In time-honored punk fashion, the three bandmembers all used the surname Fratelli.) Subsequent records earned Top Ten placings in the local Scottish charts,...