mistuned
/ˌmɪsˈtjuːnd/ /ˌmɪsˈtʃuːnd/adjective
Out of tune, wrongly tuned; (of a person) †having no ear for music (obsolete ).
Origin
Late 17th century; earliest use found in Robert Leighton (bap. 1612, d. 1684), archbishop of Glasgow. From mistune + -ed.