The Collaborative International Dictionary of English v.0.48:
Tune \Tune\, v. t. [imp. & p. p. Tuned (t[=u]nd); p. pr. & vb.
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."
2. To give tone to; to attune; to adapt in style of music; to
For now to sorrow must I tune my song. --Milton.
3. To sing with melody or harmony.
Fountains, and ye, that warble, as ye flow,
Melodious murmurs, warbling tune his praise.
4. To put into a proper state or disposition. --Shak.
Moby Thesaurus II by Grady Ward, 1.0:
32 Moby Thesaurus words for "tuned":
accordant, according, assonant, assonantal, attuned, blended,
blending, chiming, concordant, consonant, harmonic, harmonious,
harmonizing, homophonic, in accord, in chorus, in concert,
in concord, in sync, in tune, in unison, melodic, monodic,
monophonic, musical, songful, symphonious, synchronized,
synchronous, tuneful, unisonant, unisonous