This husband and wife indie-pop duo met unexpectedly. They went from exchanging emails regularly to playing together in a four-piece rock band called Vosotros. Once they agreed to devote both of their time to music, Mates Of State was formed. The couple’s music is characterized by its rhythm and serene vocal harmonies. With their energetic sound and upbeat tempos, Mates Of State guarantees a fun show. Don’t miss their performance at Maxwell’s, in Hoboken, on Feb. 18. Doors open at 9:30 p.m.; tickets are $15 each.