Marina Abramovic's REJUVENATOR OF THE ASTRAL BALANCE uses metronomes and deck chairs to create a meditative zone. Ideally, you sit in a deck chair for 45 minutes with eyes closed listening to the syncopation of the metronomes set to differnt rhythms. It worked, I noticed an initial rhythmic pattern that seemed to fade away, then later I heard that pattern return.
At the Foundation Louis Vuitton, it is difficult to relax for the prescribed 45 minutes with patrons noisily intruding and others using the deckchairs as a place to sit and talk on their mobile phones. I was able to slip into the zone for about 20 minutes and I did feel rejuvenated.