Presented by the American Poster Institute (API), Flatstock 48 will display the works of the world's top gig poster artists. The show runs March 19-21 and features posters of varying styles, colors and techniques for sale by the very artists who created them.

Flatstock 48 is hosted by Tumblr.

Flatstock also hosts the Flatstock Stage which features official SXSW showcasing artists curated by record labels, gear companies and music bloggers.