"I am so fortunate to have the freedom to express myself through music," said Katy Perry. "Now I'm calling all of my incredibly creative KatyCats to use their talent to show Madonna and me how they express their freedom. I believe that 2014 can be a year of great social change. Together we can all stand up for Human Rights. Join the conversation, and let your art be your voice."
Perry's pick will receive a $10,000 grant to a nonprofit organization of their choice. Illusionist David Blaine was last month's guest curator.
"Art can change the world, but first it needs to be seen and heard?," said Madonna. "Katy Perry and I are asking you to be that voice and show us how you define freedom in 2014. This will be a year of monumental changes for human rights, and we want you to be a part of that change. Let us hear from you."
Since its September 2013 launch, Art for Freedom -- a partnership between Madonna and VICE Media -- has received over 3,000 submissions globally, mostly via artforfreedom.com.