Kan means sound or voice. For instance, "Kita Kan" means "Kita's voice" and "K'a Kan Ben" means "sound tuning" (ben).
For Cemance, see the last paragraph of the web reference below, on Mande music, as it defines the adjective and suggests this translation. It is sometimes described as "low" (see reference), but never as "high"...
I would follow this example: keep both the African name and its translation in the final text.