AN AFRICAN JOURNAL OF HUMANITIES, LIVEWAYS, AND HERITAGE STUDIES

This study examines the bata drum, a fixed-pitch membranophone central to Yoruba ritual and performance traditions in southwestern Nigeria, using a comparative materials-acoustics approach. The objective is to connect the physical properties of the drum's constituent materials, the carved hardwood shell, the tanned hide membrane, and the lacing tension system, to established principles of membranophone acoustics. The study adopts a literature-based comparative method. It draws published values for wood density, hide tensile strength, and membrane vibration behaviour from wood-acoustics, leather-chemistry, and organology research, and it applies these values to the bata through comparison with the dundun, tabla, and orchestral timpani. No new acoustic measurements were taken on an actual bata drum. The study finds that published material values for comparable hardwoods and tanned hides predict fundamental frequencies consistent with the register commonly associated with bata drumming, and it identifies the bata's fixed-tension construction as a structural feature that makes the instrument well suited to controlled material study. The study concludes that a materials-science account of bata construction complements rather than replaces ethnomusicological description. It proposes a three-stage empirical protocol, organological documentation, acoustic measurement, and statistical analysis, for testing the framework against an actual matched ensemble. The approach carries direct implications for instrument preservation, musical pedagogy, and the documentation of construction knowledge held by Yoruba craftspeople.

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