Jaap Blonk is a Dutch "sound poet" who actually exists and makes music and poetry. After the instructor for introduced his class to one of his poems they became obsessed with him and even wrote a self-insert Jaap Blonk fanfic.
Jaap Blonk's actual website is here: http://www.jaapblonk.com/
...and his spotify... https://open.spotify.com/artist/7JlnxHpLfe15CYFEQbPO4g
and of course you can read the Jaap Blonk Fanfic here: http://https//www.wattpad.com/story/190830667-jaap-blonk-self-insert