As per Wikipedia:
Valentina Lisitsa is a Ukrainian-born classical pianist. Lisitsa resides in North Carolina in the USA. She is among the most frequently viewed pianists on YouTube. Lisitsa has followed a truly unique path to success, launching her career via social media, without initially signing to a tour promoter or record company.
This low-budget short documentary focuses on the Lisitsa's recording of Rachmaninoff's Piano Concertos No.1 and No. 2. Her breathtaking interpretation of Rachmaninoff and overall talent is observed through interviews with conductor Michael Francis, producer Michael Fine and herself.
The author of this cool documentary is Pieter de Rooij.
Watch the documentary: