Misfinger

The pupil comes for his lesson and possibly has not thoroughly learned some part of it; he does not keep the time true, misfingers, strikes wrong notes, or, to take a milder illustration, does not feel the balance of the parts, does not divine the meaning of the composer, does not appreciate the beauty of the unity of the work as a whole, has not, in fact, "finished" it;

Source: wiktionary

If Holmes misfingers a note on one of the violin strings, that is merely some small fault within the unified organisation of Sherlock Holmes and Dr. Watson Incorporated.

Source: wiktionary

The dancers had started on a third pass when Lady Lucianne piped a sour note. She blushed and laughed at her own mistake, interrupting her playing and causing Victor to misfinger his part as well.

Source: wiktionary

This means that if he misfingers and is thrown a distance from his intended note, he can continue from where he is, even if the note results in a modulation that takes him into another key.

Source: wiktionary