Update: It was brought to my attention that this story is not real. I leave it here as an example of well crafted web legend.  The Spanish Catalans and the Madridians are longtime enemies. Basically, the Catalans are aspiring to get autonomy from Spain which is ruled from Madrid.Placido Domingo was born in Madrid. Jose Carreras is Catalan. Both are among the worlds leading tenors. image: Carreras, Domingo and a friend - Pavarotti In 1984 Domingo and Carreras became enemies because of political reasons.Both gentlemen are very popular performers worldwide. Both have put a clause in their contracts that say they will be willing to perform as long as the opponent won't appear on the same show. In 1987 Carreras has acquired a much fiercer enemy than Placido Doming.