This is the eighth of a series of 'ready mades', with this term I'm not trying to make an artistic statement, it's just a way to underline that I haven't play a huge role in the creation of these pieces, which are just recordings of a sound emitted by a machine.
In this case, the machine is a device from the late eighties that was intended to modify brain waves to relax, relieve stress, etc. The enterprise that built this machine was closed at the beginning of the nineties with a court order. They were accused of misbranded and selling pretended medical devices without the required authorization. Besides, there were attributed epileptic seizures to the use of these machines.