Opus Mixtum is Antietam's eighth full-length release. With each album Antietam, Tara Key (guitar), Tim Harris (bass) and Josh Madell (drums), have gotten closer to the essence of what keeps the band vibrant and inspired for so many years. Originally, the double-CD, triple-LP Opus Mixtum was supposed to be two separate, distinct releases -- one a powerful Rock record tracked at Brooklyn’s Seaside Lounge with producer (and now auxiliary live band member) Josh Clark; the other a sprawling, loopy and diverse instrumental album constructed piece by piece in Tara and Tim’s digital home studio. Somewhere along the way the albums became tangled together.