They had to endear themselves somehow...
Still, I've spoken to Kit Rolfe a few times, she's great value, and a good singer. But apparently, it was claimed, the other two had their microphones turned of at the event, and the other vocals were coming from backstage. Stories differ.
Various explanations have been given for this travesty of failure by this UK entry at Eurovision in 1984. From rioting Tottenham Hotspur fans to the group miming their act. Personally I think it was because folk thought the song was rubbish, and the performance worse. Still, I love it.