On Friday this week, ABBA dropped their first album in over 40 years.  ABBA, of course, were huge in the 70s – known and adored for regularly crafting between between 3 and 4 minutes of irresistible pop perfection. In celebration of their immense contribution and their triumphant return from such a long hiatus, this week Marty and Venetia explore 1970s pop, in many of it’s various guises.