National Geographic Channels International

Abel Pintos explores the legacy and great influence of Mercedes Sosa, the woman who revolutionized Argentine folklore. Thus, through interviews with musicians and intellectuals who supported her at the beginning of her career, with her grandchildren who knew her most intimate side, and with artists such as Fito Páez and Charly García, Abel reconstructs and honors the Mercedes figure.

The two-hour episode proposes a revealing journey into intimacy and the rediscovery of this figure who marked the music scene with his art. The production has the collaboration of his family, in front of and behind the camera, more than one hundred hours of unpublished material, testimonies and exclusive access to recordings rarely seen.

The backstory and legacy of Brazilian rock band Os Paralamas do Sucesso is examined in this fascinating music documentary. With previously unseen footage, access to present-day rehearsals, and a visit to where it all began, TV presenter Roberta Martinelli shines a light on the lives of Herbert Vianna, Bi Ribeiro and João Barone like never before.

They say it's over 2000 years old, and more than 4,000 miles long. But even today nobody really knows for sure. The Great Wall of China is one of the world's famous buildings but it is still the least known. British writer and historian William Lindesay has lived in China for twenty years. Exploring the Great Wall has become his lifetime obsession.

Containing exclusive material and interviews, "Bios" dives into the history of Brazilian rock band Titãs. TV host Sarah Oliveira looks back at the band's formation in a São Paulo school and their breakthrough hit "Sonífera Ilha", as well as Titãs' moments of crisis. Also included is footage of the band's performance at the SESC Pompéia music hall, some 40 years after their first concert.