On 16 October 2011, Marconi Union created an eight-minute track, titled "Weightless", in collaboration with the British Academy of Sound Therapy.
According to scientists at the Mindlab institution (a commercial 'neuromarketing' company) it induced a 65% reduction in overall anxiety and brought test subjects' resting pulse rates to 35% of their usual resting rates. The song features guitar, piano and manipulated field recordings. It is punctuated throughout by low tones that supposedly induce a trance-like state.
Link to Song