Zeng Liming leads his students in a drum circle in a square by Shenzhen's Nanshan Book City. Zeng is teaching children how to play the African hand drum known as the djembe. Chen Wenli / for China ...

Since the iPad’s 9.7-inch display is relatively close in size to a drum head, it makes the device a natural candidate for percussion apps. Enter the DjembePad: an app that emulates the Djembe African ...