1590s, from tune (v.), "probably recommended by ATONE" [OED]. Related: Attuned; attuning.
change or accustom to; bring into equilibrium with
- To tune or invest track; to help make melodious; to modify, as one noise or musical instrument to a different; since, to attune the voice to a harp.
- to prepare fitly; which will make accordant.
(v. t.) To tune or added tune; to create melodious; to modify, as one sound or drum to some other; as, to attune the sound to a harp.
- (v. t.) To prepare fitly; in order to make accordant.