Lass' ihn was the Swiss entry at the Eurovision Song Contest 1998 in Birmingham performed by Gunvor Guggisberg. The song was an ultimatum to a man who had frequently cheated on her, telling him to leave her for good. The song performed fifth on the night, following Spain and preceding Slovakia. At the close of the voting it had received Nul Points placing last. Due to this poor result, the country was relegated from the next Contest but would return two years later.