The Sela Kalimba 17 Hollow Koa has a hollow body made of fine koa wood. Koa is a rare species of acacia that grows only in Hawaii and is often used to build instruments because of its balanced sound. Like a guitar or ukulele, the hollow body with resonance hole provides a powerful sound. In addition, this model has a pickup through which the kalimba can be connected to a PA system for live performances or to a recording device for recordings. The 17 notes of the Sela Kalimba 17 Hollow are all...