A new band gaining momentum in Cookeville has most of its members from Warren County. Sleep Nation is an up-and-coming group that is building popularity.The three-member band consists of Micah Rowland, 22, a McMinnville resident who currently attends Tennessee Tech; Justin Swingler, 25, originally from Texas and 2011 Tennessee Tech graduate; and Bran Merritt, 25, originally from McMinnville, who is also a TTU graduate.Origins of the band began in 2005 when Swingler put a bulletin on a social network site looking for a guitarist and bass guitarist to start a punk rock band. Merritt replied.