MGMT’s Ben Goldwasser wouldn’t change a thing. Three years ago he and Andrew Vanwyngarden, his musical other half, released an opinion-splitting second album, Congratulations. Angry and obtuse, it was an ill-tempered retreat from the chart friendly swagger of their 2008 debut, Oracular Spectacular. Fans and critics were confused – many loathed Congratulations. The backlash rumbled on and on and, it could be argued, continues to this day.