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[https://en.wikipedia.org/wiki/Focus_(band) Focus] are a Dutch rock band formed in [https://en.wikipedia.org/wiki/Amsterdam Amsterdam] in 1969 by keyboardist, vocalist, and flautist [https://en.wikipedia.org/wiki/Thijs_van_Leer Thijs van Leer]. Past members include guitarist guitarists [https://en.wikipedia.org/wiki/Jan_Akkerman Jan Akkerman], [[:Category:Philip Catherine|Philip Catherine]] and bassists bassist [https://en.wikipedia.org/wiki/Bert_Ruiter Bert Ruiter].