We agonised over the inclusion of "Yesterday" in the show. It is such a famous song, the icon of an era, but had it been heard too much? The story of the addition of the original string quartet is well known, however, few people know how limited the recording was technically, and so the case for not including it was strong, but how could we ignore such a marvellous work? We introduced it with some of Paul's guitar work from "Blackbird", and hearing it now, I know it was right to include it. Its simplicity is so direct; it tugs at the heartstrings.