Personally, I'd go for Cart On but if Coley has a preference then I'm happy for his choice to be played.
As for Loweiy's initial question, there's a thread on this site that lists some of the tunes that are played:
Pre Match Entertainment - Football Ground Guide. They seem a bit confused about what's really played at Sunderland (and PNE). Every other site seems to say it's Dance Of The Knights from Romeo & Juliet but this site has it as Wagner's Ride of the Valkyries. You can check them both out at
Amazon.co.uk: Romeo and Juliet (Previn): Music: Sergey Prokofiev and
Amazon.co.uk: Wagner Weekend: The Ride of the Valkyries: Music: Richard Wagner,Leopold Stokowski,London Symphony Orchestra