Since their 2003 debut album, Under Wires and Searchlights, Marconi Union have continually refined and developed a unique musical identity that seamlessly blends elements of dub, jazz, ambience and electronic music. Their 2014 album Weightless comprises six tracks, simply entitled Part 1 to Part 6. The tracks are minimal, combining warm drones and drifting sounds with occasional sparse rhythms. Part 1 is the original "Weightless" track, which almost appears to have a heartbeat running through it, slowing down very gently throughout the piece, encouraging a deep sense of relaxation in the body, it's use of specific rhythms, deep bass tones, frequencies and intervals inducing an almost trance like state in the listener.