When Marconi Union collaborated with the British Academy of Sound Therapy in 2011, the result was "Weightless"—an ethereal composition whose slowing tempo was proven to reduce listeners' heart rates. Such blissfully meditative properties characterise all the UK trio's work, though their tactics vary: in "First Light", rain forest chirps lend a sense of space to ringing guitars and dub delay; in "Hinterland" and "Interiors", minimal techno's pitter-patter beats bring structure to swirling chords. Throughout, bell tones, jazz brushes and layered synths bring true musicality to deep relaxation.