This sonata is slightly more difficult than K545. If she can manage K545, K570 is the next logical step (it is around grade 6/7).
It is more difficult musically than technically. The slow movement in particular requires a good legato, and sensibility to bring up its lyrical qualities. Technically the rondo (last mov) is the most difficult.
Best wishes, Bernhard.
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Great-Thanks Bernhard! Any etudes or small pieces that you might suggest for practice to prepare for the legatos and rondo on this piece? Regards, Lani
The work she does on the piece itself should be enough.
Best wishes, Bernhard.
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"A person who persists in believing what is not true or disbelieving what is true can waste a lifetime of effort on something that is without hope of success".