Jack 'Jack' Antonoff has stuck his oar in during the invention of an above average number of above average tunes.
Here's a selection of his greatest bits featuring Lorde, Taylor Swift, Carly Rae Jepsen and Charli XCX.
Email! It's like social media, but worse.
How about emails from Popjustice?
(Don't worry, they don't get sent very often.)
