tonal

adjective Music.

1. pertaining to or having tonality.

adjective

1. of or relating to tone
2. of, relating to, or utilizing the diatonic system; having an established keyCompare atonal
3. 1. (of an answer in a fugue) not having the same melodic intervals as the subject, so as to remain in the original key
   2. denoting a fugue as having such an answerCompare real 1 (def. 11)