But there is few report on the practice and application of using Orff instruments in the training of mentally retarded children.

This article develops a research on it, and examines the efficacy of Orff instruments on developing musical intelligence of mentally retarded children.

Orff′s music teaching method has greatly reduced the difficulties of music education. Kids at the age of 4 or 5 can play the tune of a famous song after they have heard it once or twice.