 Brother Dominique Catta, choirmaster of the Keur Moussa Abbey, was the first Western composer who wrote for the kora (solo pieces as well as duets with Western instruments).An electric instrument modeled on the kora (but made primarily of metal) called the gravikord was invented in the late 20th century by instrument builder and musician Robert Grawi.It has 24 strings but is tuned and played differently than the kora.