Even the biggest rock stars on the planet can't avoid social media these days, and on Oct. 3, Paul McCartney opened himself up to the Twitterverse for a wide-ranging online Q&A session.

Choosing from what must have been thousands upon thousands of questions, McCartney let fans in on the hardest part of songwriting, artists he might potentially work with sometime soon, the most recent records he's purchased, and just why, exactly, he chose 'New' for the title of the album he's scheduled to release on Oct. 14. Take a look at some of the highlights from the Q&A below.