When my daughter was a young violist of ten years, we have a lot of fun to learn and play these lovely pieces (which I had for most of transposed an octave lower, so that it continues to fall well under the fingers for guitar).
The pieces are all in the first position on the violin and the accompaniment is pretty easy too. The level is slightly progressive, to both instruments.
The music of these twelve pieces, melodic and full of atmosphere, gave us much joy.
