The Dutch winners from the 1975 Eurovision Track Competition, Teach In were formed in 1969 in Enschede around a line-up of twin vocalists Hilda Felix and Henk Westendorp, guitarist John Snuverink, bassist Frans Schaddelee, keyboard player Koos Versteeg, and drummer Rudi Nijhuis. By no means boasting a well balanced line-up, by 1972 just Versteeg and Nijhuis continued to be on board, to become became a member of by vocalists Gettie Kaspers and Ard Weenink, guitarist Chris de Wolde, and bassist John Gaasbeek. Developing popularity in holland saw the music group score three Best 20 strikes during 1974, before getting into the Eurovision Track Contest. Their earning track, “Ding A Dong,” obtained across Europe, as well as the music group spent a lot of the next 2 yrs on the highway. Further line-up adjustments, however, continuing to scar tissue the music group, like the departure of Kaspers for any solo profession and, by 1977, the group prearranged as Versteeg, Nijhuis, de Wolde, Nick de Vos (bass), and performers Betty Vermeulen and Marianne Wolsink. The next 12 months, Teach In split up. Nijhuis and Versteeg re-formed the music group in 1980, and a small number of hits followed prior to the music group shattered once more. The initial line-up after that reconvened in 1997.