Tortoise is a certainty and The Catastrophist confirms the undertaken sound path with their previous album bacons of ancestorships.

Abandoned vibraphones and marimbas that outlined their passion towards the avant-garde minimalism and classical music of Steve Reich and Terry Riley, leverage the skills to build bass music played in a hypnotic and hallucinogenic way.

The title track that opens the album is the development of the “penumbra” (Bacons’track) that was a little more ‘than an interlude of a minute with echoes of Yes of better times, Georgia Hubley accompanying the item in Yonder Blue, the Stereolab (“cobra and phases group play voltage in the milky night” produced by John McEntire Tortoise in ’99) seem to slip through the folds of the disc without shame in conjunction with “rock on” who together with his men sang and distortion bitcrusher seems to repeat the disc collaborative few years ago that the Tortoise made with Bonny Prince Billy (“the brave and the bold”).

With Shake hands with dangers back loops and backbeat low bpm that characterized them, heavily embellished with fuzz guitar sounds and modular, so ‘as in the stunning first single gescap crossing synth harmonies in that bittersweet characteristic that has always characterized the harmonic line of Tortoise when pushing on that hybrid of melody, rhythm and research.

Dub pulsation of bass lines are now more linear and rock oriented than before,the band interweaves as if they are looking for a distant echo of classical music flowing in progressions and backbeat in slow motion that made school thanks them.

Some moments seem to the well-refined post-jazz that I find “outburst” just in Isotope 217, one of the side projects of the group with their guitars Jeff Parker in ’97. The episodes reminiscent of the previous albums, especially in its  lysergic suites always dynamic, full of counterpoints and jazzisms , tesseract is a perfect example of what the Tortoises make with a look to Matching Mole’s Robert Wyatt and they succeed rather fine. God forbid don’t have them, they’re still here and it’s a hard-solid album.