Why do distant African regions sometimes have similar musical styles and instruments?

The similarity of musical styles and instruments across distant African regions is primarily attributed to historical migrations of African peoples, which facilitated the spread of cultural traits, instruments, and performance techniques.1

Key factors contributing to these shared traditions include:

• Migration Patterns: Major and minor population movements, such as the dispersal of Bantu-speaking peoples, carried specific musical practices—including time-line patterns, bells, and lamellaphones—across vast distances, from West Africa to Central and Southern Africa.12
• Trade and Exchange: Intensified trade networks, including the ivory and slave trades, acted as agents of cultural contact. For instance, the zeze zither spread from the East African coast into the interior, while the likembe lamellaphone traveled extensively through upriver trade routes.1
• Cultural Diffusion: Scholars have proposed various diffusionist theories to explain identical traits in separated areas, such as the presence of similar xylophone styles in Mozambique and West Africa. These may result from ancient coastal navigation or the movement of labor.1

While these historical processes explain many similarities, the distribution of musical traits remains complex, as adjacent regions sometimes maintain distinct styles due to differing cultural histories.1