Shhh … it’s time for Secret Voices, the 10th session of TED2013. Get ready to hear stories of the forgotten, marginalized, stigmatized and hidden. Our first speaker will make quite an entrance while the last will give a stirring finish, in spoken word. In between, thoughts on interspecies communication.

Here, the speakers who appeared in this session. Click on their name to read a recap:

Ben Affleck, straight off his Argo Oscar victory, introduced the Orchestre Symphonique Kimbanguiste.

Diana Reiss studies cognition in animals and the evolution of intelligence. She and her colleagues demonstrated that bottlenose dolphins (and Asian elephants) can recognize themselves in the mirror.

Musician Peter Gabriel is the co-founder of WITNESS, which distributes digital cameras to empower people to document human-rights abuses. A founder of the band Genesis, Gabriel is now a solo artist and record mogul, championing world music and innovation.

As Director of MIT’s Center for Bits and Atoms, Neil Gershenfeld explores the boundaries between the digital and physical worlds.

Computer scientist Vint Cerf helped lay the foundations for the internet as we know it.

Beijing-based artist Liu Bolin silently comments on modern sociopolitical conditions by dissolving into his art.

Lakshmi Pratury is the host of The INK Conference and was the co-host of TEDIndia in 2009. She talks about her new website, Billionaires of Moments.

Eleanor Longden overcame her misdiagnosis of schizophrenia to earn a master’s in psychology and demonstrate that the voices in her head were “a sane reaction to insane circumstances.”

Born in North Korea, Hyeonseo Lee left for China in 1997. Now living in South Korea, she has become an activist for fellow refugees.

Shane Koyczan makes spoken-word poetry and music. His poem “To This Day” is a powerful story of bullying and survival, illustrated by animators from around the world.