Javelin + Future Islands + Lonnie Walker

As Javelin, cousins Tom Van Buskirk and George Langford perform what seem like lost dance anthems from an unkempt disco—a little poppy, a little arty and irredeemably goofy. Although at first listen the local duo’s songs scan as ’80s novelties, the band is a thoroughly modern construct, melding samples with original material, while flirting with an iPod’s worth of genres. Tonight the band joins lo-fi electropop outfit Future Islands.