Paul Simon’s 1991-92 “Born at the Right Time” tour, which played Central Park in New York in the summer of ’91, is a landmark event not just for its music, but for its historic amalgamation of international musicians from several continents and dozens of genres.

Paul Simon, Song by Song: August 15, 1991 in Central Park, New York

When a married couple breaks up, the two spouses are not the only ones affected. Everyone who attended their wedding — or might have — is saddened as well. Something similar happens when pop duos and groups split up.