simple past tense and past participle of cross-tune

Third-person singular simple present indicative form of cross-tune

plural of cross-tuning

(music, transitive) To give an alternative tuning to (the open strings of a string instrument).

present participle of cross-tune

(music) A system of tuning a musical instrument to pitches other than the accepted standard: for example, tuning one or more strings of a violin to pitches other than the commonly accepted GDAE.