Here is an analysis regarding the track and its digital availability: "Sierra Leone - Mariama" Track Details Lorne Balfe (often listed alongside Hans Zimmer).
Other Sierra Leonean music, including artists like Emmerson , Alonzo, and DJ Lulu, can be found for purchase on ReverbNation. Other Potential Interpretations
Some older, unrelated educational YouTube content (e.g., Mariama's Story | Sierra Leone ) exists but was not available at the time of the search. To make sure this matches what you need, could you clarify: Org., Mariama holding a different title)?
If it is the Lorne Balfe track, I can try to help you find an official place to buy it.