ORFF INSTUMENTS
Included in this group you can find intruments like xylophones and metallophones, with
range from 1.5 to 3 octaves, in different register's versions (Soprano, alto,
tenor or bass), and its chromatic or diatonic versions. Widely used in teaching
music since middle of 20th century from the pedagogical ideas of Carl Orff, these
instruments are able to remove easily or add bars graduating the musical
learning difficulties.