Thijs van Leer is a Dutch musician, singer and composer, best known for heading the Dutch progressive rock band, Focus, as primary vocalist, Hammond organ player, and flautist. He also yodels and whistles. In his later years, van Leer went on to release many solo albums which were also classical music and jazz-based.
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Buy Discography: 
| Play | Soundtrack | Movie/Serie | Type | Buy song | |
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| Hocus Pocus | Formula 1: BBC Sport | writer |
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| Hocus Pocus | Skins | writer |
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| Hocus Pocus | The Stöned Age | writer |
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| Hocus Pocus | Iltatähti | writer |
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| Hocus Pocus | Shameless | writer |
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| Hocus Pocus | She nu | writer |
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| Hocus Pocus | Vinyl | writer |
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| Hocus Pocus | The Babysitter: Killer Queen | writer |
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| Blow Up | Project X | writer |
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| Hocus Pocus | Supernatural | writer |
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| Hocus Pocus | RoboCop | writer |
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| Hocus Pocus | Trolls World Tour | writer |
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