South by Southwest (commonly known as SXSW, or just South By) is a massive annual conference that takes in Austin, TX. It's most renowned for featuring the most up-to-date, groundbreaking advances in the tech industry; last year we got the dish on Google glass, and over the years, it's been the debut spot for huge start-ups like FourSquare and Twitter. But there's another side of SXSW, a side that presents the most promising new music and film artists. Some of today's biggest names, from Lena Dunham to Grumpy Cat, first gained a lot of traction after passing through the conference. Keep scrolling for our favorites!