Zen

Zen was a Dutch rock band, founded by Siegfried 'Siebe' de Jong (vocals and saxophone) and Dirk van der Ploeg (guitar and vocals) in 1965. Van der Ploeg was the songwriter for the band, but the band underwent numerous changes in its line-up in its existence. The hippie-oriented one hit wonder band hit the top spot on the Dutch Top 40 singles chart in January 1969, with their version of the theme song from the musical Hair.