"I made it up as I went along!" Alex Turner speaks to BBC Radio 1's Annie Mac about writing the Arctic Monkeys new album, Tranquility Base Hotel & Casino. Part 1 - "I ended up making a world of my own”: youtu.be/HgtXRstQhYg Part 2 - "My fear was he'd be underwhelmed": youtu.be/ja_HrsT-Yys Part 3 - "I remember being quite unsettled": youtu.be/WTb_r1gh1mY