Week-End
Remove the filter from the mask and adjust it to your face by a rubber band. Insert the tube of the flute airtight into the opening of the mask. Start breathing. After some time while exhaling produce a sound (position of hands: low “c”) using the opening of the flute tube like a trumpet. During this process the breathing sequence will speed up and you will unvoluntarily produce increasingly congested sounds.
Continue until you are physically exhausted.