Excerpt from "Accordion Resource Manual"
The Bassetti Leader is a unique small free
bass instrument, with a pitch range of 3 full octaves in the left hand.
This instrument has proven extremely useful in class instruction, not only for
performance but also for the teaching of theory. It could prove less
costly and less unwieldy than a piano lab. These instruments are great for
stimulating the development of pitch. Moreover, since the instrument is
directly on the body and since there is an immediacy of tone response, the
instrument is excellent for developing independence of hands, motor
co-ordination, aural as well as sensory perception. Presently, there are
some experiments being undertaken to assess its potential in therapeutic
treatment of retarded children and those less endowed with musical
aptitudes. Many piano teachers are beginning to look at its usefulness
especially since used pianos are becoming scarce. Some pianists doing
missionary work where pianos are not readily available in remote communities are
studying this instrument. Finally, te instrument can serve as a pitch pipe
for a choral conductor who can double melodic lines on the left hand and still
leave the right hand free to conduct a choral ensemble.