Westbound Train round outs the Summer of Ska Tour’s lineup, supporting Catch 22, Voodoo Glow Skulls, and other 2-tone notables who just want to skank. Representing Tim Armstrong’s street-punk stronghold Hellcat Records (home to Dropkick Murphys and Tiger Army), Boston’s Westbound Train knocks back its reggae with a chaser of soul and blues, mashing together an uplifting westbound sound. “Ah, summertime, and the livin’s easy.”