Høyem is a son of forestry teacher Asbjørn Høyem and politician Jørun Drevland.
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In September 2010 Sivert Høyem launched the song "Prisoner of the road" in order to raise awareness for NRC, which is this year's recipient of the Norwegian National Telethon.
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Whilst pursuing a music career he minored in history at the University of Oslo.