When feedback went 

extinct, there was still a demand for this type of Music. At the time people wanted to see a live rockband and a disco afterwards. Feedback had been on that market and left quite an hiatus when they quit. Herrie & the Beukers were thus formed around the feedback nucleus of Jan, Rene and Henri. Rob was a drummer Jan knew from the Jazz-rock band he'd just joined and Jitte was Henri's pal. the two jammed together a lot. It was heavy and it worked.