Date: 7 April, 1973 Location: Grand Théâtre Luxembourg City (Luxembourg) Participants: Unidentified Outcome: Unsolved
In 1973, during a Song Contest aired by the Compagnie Luxembourgeoise de Télédiffusion (CLT), just at the very beginning of show, the broadcast was interrupted by what it seems psychedelic animations and videos accompanied by rock music. This interruption lasted for about 25 minutes until the signal resumed. Nobody claimed that intrusion.
