I know this is a Guy Mitchell record which fans have adapted with their own lyrics, but why do Forest fans sing it? I know a couple of teams who play in blue that often sing this (Birmingham, Sheff Weds), and the 'Blues' style of music is often associated with sadness, so why do we sing it as a term of happiness? Is it ironic? Or am I dense / too young to know? Answers on a postcard...