Once in a while we do a workshop on this theme at the FSGW Getaways. The whole thing was the brainchild of a woman named Laura Sailer. Her biggest success, I think, was getting a large roomful of people singing four songs together, with each quarter of the room having their own part and a big songsheet with the words. I think the songs she combined were all military theme songs. I remember The Caissons Go Rolling Along and the Marines Hymn, the others must have been Anchors Away and Off We Go into the Wild Blue Yonder.

ALso, a different game, after the Rick Fielding concert Roger in Baltimore sang the words of Amazing Grace to the tune of House of the Rising Sun. He's a good blues guitarist and it was mind boggling.