A pair of kemanak displayed at the Sana Budhaya Museum of Yogyakarta.

A pair of percussion idiophones, made of bronze, each shaped like a hollowed-out banana with a slit along its convex length. Each is sounded by a separate performer who strikes it on the edge of the slit with a thinly-padded stick beater. The two elements of this instrument are tuned differently and played in alternation with one another.