2. (Mus.)
(a) A rhythmical, melodious, symmetrical series of tones
for one voice or instrument, or for any number of
voices or instruments in unison, or two or more such
series forming parts in harmony; a melody; an air; as,
a merry tune; a mournful tune; a slow tune; a psalm
tune. See {Air}.
(b) The state of giving the proper, sound or sounds; just
intonation; harmonious accordance; pitch of the voice
or an instrument; adjustment of the parts of an
instrument so as to harmonize with itself or with
others; as, the piano, or the organ, is not in tune.
Like sweet bells jangled, out of tune and harsh.
--Shak.
3. Order; harmony; concord; fit disposition, temper, or
humor; right mood.
A child will learn three times as much when he is in
tune, as when he . . . is dragged unwillingly to
[his task]. --Locke.
Whilst tuning to the water's fall, The small birds
sang to her. --Drayton.
2. To utter inarticulate harmony with the voice; to sing
without pronouncing words; to hum. [R.]