Expected by many to continue leading the post-rock brigade into a new fusion with dub and electronics, Tortoise instead turned yet another corner with their third album, TNT. Adding guitarist Jeff Parker to cement their musicianship as well as their connections to Chicago’s fertile jazz/avant-garde scene, the band returned with a record of post-modern cool jazz, only slightly informed by the dub, Krautrock, and electronics of Millions Now Living Will Never Die. It shows from the first few seconds — a lazy, slightly free drum solo frames a few tentative guitar chords and some teased effects, before the band kicks in with a holds-barred jam that encompasses a tremulous solo from trumpeter Rob Mazurek. With engineer/mixer/drummer John McEntire and company adding only a few post-production frills to the mix — and those so complementary and subdued that they rarely even sound like effects — TNT comes off as a surprisingly organic record. The evocative Spanish-style guitar on “I Set My Face to the Hillside” plays over an assortment of playground sounds, while “The Suspension Bridge at Iguazú Falls” deconstructs a classically angular Tortoise groove and re-emerges with an evocative, deeply affecting groove over shimmering vibes and precision guitar lines. There are plenty of nods to post-rock touchstones like Krautrock (“Swing From the Gutters”), dub, and minimalism (“Ten-Day Interval”), but Tortoise hardly sounds like a difficult band here. Instead of forcing studio experimentation to become an end to itself, the band mastered — with a single, deft statement — the far more difficult lesson of making technology work for the music. – John Bush