Verdict: The Fab One Rating: Paul McCartney's two previous all-solo albums arrived at pivotal moments. The first, 50 years ago, was a rough-and-ready affair made as the Beatles were falling bitterly to pieces. The second, in 1980, came as his next band, Wings, were crumbling. Now we have McCartney III, made 'in rockdown' as Macca was quarantining with family members in Sussex. This was to have been the year he returned in triumph to Glastonbury: instead he found himself writing songs alone on guitar, piano, an old Fab Four mellotron and the double bass used on Elvis Presley's early hits. Rec...