Psi is London-based patten's third full-length, second for Warp, and first since becoming a duo rather than a solo project (the two artists refer to themselves only as D and A). Compared to previous patten releases, this one strips away some of the haze, resulting in something much tighter and more focused than the blown-out, sideways-glancing abstract techno of prior albums GLAQJO XAACSSO and ESTOILE NAIANT. The switch from cluttered, tinny textures to a more bass-centric sound and more spacious sonic arrangements might be a bit jarring to anyone familiar with those albums, but ultimately it's a welcome change, as this album contains some of patten's strongest material.