Teach-In was a middle of the road pop band from Enschede, The Netherlands, best known for winning the Eurovision Song Contest in 1975 with their song 'Ding-a-Dong'. The English version of this song made it to #13 in the British charts.
Teach-In was established in 1967 and called it a day in 1980, but the 'Ding-a-Dong line-up' was active mainly between 1972 and 1976, their glory years. They had considerable chart success in their native Netherlands .
