The disruption of the system led to the wrong anthem before the quarter-finals of the Champions League against Paris Saint-Germain.
The Europa League anthem was played on the PA system, as the players were listed at Villa Park on Tuesday before it was changed to the Champions League anthem.
Sources and UEFA sources say the automatic system responsible for slapping the anthem fell and was violated by another system.
Several players looked at each other with cheese when the anthem was played.
Villa defender Ezri Consa has made a reference to the game when he and midfielder Tilemans tried to keep their laughter, while Paris Saint-Germain’s Osman Dembele exchanged an amazing look.
There is nothing of the UEFA rules about the wrong anthems that are played, so it is unlikely that Villa will face any punishment.
The European Football Confederation Board provides the relevant anthems to the clubs, but it is the responsibility of the clubs to play with them.
The rules show that the music is played while the players leave the tunnel, then the Champions League anthem when they won.
Unai Emery scored the first 2-0 and won 3-2 in the second leg, but Paris Saint-Germain advanced 5-4