There is something to be said about a frankly worrying number of classic records which is that many of them aren’t up to scratch. There are countless albums which on release were showered with some of the most golden platitudes ever forged. They captured a zeitgeist so perfectly that they must be regarded as true classics. But when you remove them from their time frame, many of them struggle to stand out. Pills ‘n’ Thrills and Bellyaches is a fun record, but it’s nothing more than that. Post Merriweather Pavilion is a collection of bleeps that we convinced ourselves was…