Ever since my ears were damaged at a Mogwai concert in 2001, I’ve shied away from bands specializing in colossal post-punk instrumentals. It’s not surprising, consequently, that I’d missed out on Maruja until now. I’m led to believe the new 22-minute Tir na nÓg is the first time the British band has fully embraced a free jazz attack. The brutal improvisations on Tir na nÓg are the liberating sounds I’ve long heard in my occasional dreams about vigorous jazz of the future. I’m suddenly willing to endure hearing loss.