The last 15 years have borne witness to the Philadelphia five-piece exercising stylistic evolutions and aerial dynamics with humbling dexterity and untamed ambition. At their roots may be a theatrical progressive punk/post-hardcore band, but they’ve never been content to remain comfortably within a familiar genre. Their continuous multi-directional movements have left them increasingly difficult to classify, the growth of their branches impossible to predict. The group’s sixth full-length album, Pale Horses, is the best evidence to date of their eclectic agility.