New Madrid elevated its game in 2014 with the release of sophomore album Sunswimmer. Produced by David Barbe at Chase Park Transduction, the group expanded its summer-evening guitar-twang repertoire, experimenting with more atmospheric textures and sturdier songs, like the driving "Manners" and chugging "Forest Gum.” Their headlining slot at the 40 Watt this Friday may also include some new material the band has been fleshing out at Normaltown Hall. New Madrid hits the road this March with Diamond Rugs, which features members of Black Lips, Deer Tick and Athens’ own T. Hardy Morris. Savannah's surfy, Motown-inspired Triathalon and Athens psych-rockers Woodfangs open Friday’s show.