I heard FoA sung upbeat over two years ago in Tenerife and it was great.

Perhaps the origins of the faster version stem from us Glasgow Celtic (soccer)fans who have this as an anthem. Getting 60000 people (and yes there are that many of us at each game!!) to sing slow is impossible so the pace picks up.

They play the slow version (by Paddy Reilly) over the sound system before each game and last week even had the Irish Tenors perform is live.

Regards