Source : Webster's Revised Unabridged Dictionary (1913)

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 : WordNet®

tuned
     adj 1: brought to correct pitch; "his tuned violin"; "the attuned
            instruments" [syn: {attuned}]
     2: so adjusted as to be appropriate or brought into harmony;
        "an industry not attuned to the demands of the market"; "a
        remark keyed to the situation"; "charges finely tuned to
        the amount a student can afford" [syn: {attuned}, {keyed}]
     3: tuned in equal temperament; or so tuned as to allow
        modulation into other keys