Bohemian Rhapsody was at #1 in the charts at the time and that was the song they opened the show with. The Caird Hall lights were turned off, and out of the darkness a loud mystery voice was heard announcing..."Ladies & gentleman, welcome to a night at the opera"... then out blasted the middle operatic sequence from Bohemian Rhapsody. It was still pitch dark as we listened to the familiar song without the band present, but eventually it flowed straight into Queen bursting onto stage at the famous guitar riff segment, complete with exploding flash bombs. Quite an intro!
Needless to say they kept these kind of theatrics going throughout the rest of the show.
Below is a recording from this actual concert. 2 tracks in fact with Dundee getting a couple of shout-outs during the chat to the audience.