http://taidemuseo.hel.fi/suomi/tennispalatsi/lisat/bjornaho.html and here is the video and an other one which shows why it was possible to do   https://bjornaho.org/1996-2/

https://iffr.com/en/persons/bj%C3%B6rn-aho

BAR was group of three artists, Björn Aho, Stig BaumgartnerVesa-Pekka Rannikko. Members of the group have their background on scene of visual arts: painting, sculpture, video art and installation. They have earlier made also performances in various compositions.