Google+ has a short documentary on Kenyan hip-hop artist Juliani. It follows him around, features interviews, shows his use of Google+ for his career and includes reactions from fans. The Google promotional aspects are a little heavy-handed at times, but it is an interesting story of a young musician. For those who are looking for different stories from the continent of Africa, this is one example.
Here is another recent video that gives a quick background on Juliani.