which art forms have keep west africa's traditions alive

The tradition which helped keep West Africa's Traditions alive was from oral story telling, which is also known as griot. Griot are a member of a group who pass on history through different forms of art.  

Explanation:

For a very long time West Africa did not have written language. To account the history in some form, they started telling oral history through music, plays etc.

Through the mouth of the griot, history was passed down from generation or region to another. Traditions were kept alive through dancing, music, plays and clothing.

we have pictures for proff

they also have books