Tune \Tune\, v. t. [imp. & p. p. Tuned; p. pr. & vb. n. Tuning.]

1. To put into a state adapted to produce the proper sounds; to harmonize, to cause to be in tune; to correct the tone of; as, to tune a piano or a violin. `` Tune your harps.'' --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Tune \Tune\, n. [A variant of tone.]

1. A sound; a note; a tone. ``The tune of your voices.'' --Shak.

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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Tune \Tune\, v. i.

1. To form one sound to another; to form accordant musical sounds.

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.]

Source: Webster's Revised Unabridged Dictionary (1913)