Those present at Hey Marseilles’ performance at Edmonds Center for the Arts on Sunday evening were witness to something special. The combination of the ECA’s gorgeous Art Deco setting, impeccable acoustics, and Hey Marseilles’ indie chamber-pop sound produced a concert that was truly singular and transcendent. The band has been recording their third album and this was the perfect chance for them to test fresh material. And while there seems to be no great departure from their previous work, this is fine because the music is intricate and beautiful, from Samuel and Jacob Anderson’s respective cello and viola to Matt Bishop’s maudlin, admittedly white-guy vocals. As Bishop quipped, “We’re white guys with acoustic instruments, (depressing music is) sort of our niche.” And they fill that niche quite nicely and with apparent ease. It was a rare treat to see six people so in tune with each other as they produced poppy, atmospheric, shimmering sounds that echoed perfectly through the auditorium. Honestly, the show ought to have been filmed, it was that spot-on. Hey Marseilles played two full sets with an intermission in between, and then an encore, the tracks ranging from the beginning of their career until now. It appears that Hey Marseilles has a busy, productive time ahead of them, for themselves and for their fans.