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Webster 1913 Edition
Attune
At-tune′
,Verb.
 T.
 [
imp. & p. p. 
Attuned
; p. pr. & vb. n. 
Attuning
.] [Pref. 
ad- 
+ tune
.] 1. 
To tune or put in tune; to make melodious; to adjust, as one sound or musical instrument to another; 
as, to 
. attune 
the voice to a harp2. 
To arrange fitly; to make accordant. 
Wake to energy each social aim,
Attuned 
spontaneous to the will of Jove. Beattie.
Webster 1828 Edition
Attune
ATTU'NE
, v.t [of ad and tune. See tone and Tune.]1.
  to make musical.Vernal airs attune the trembling leaves.
2.
  To tune, or put in tune; to adjust one sound to another; to make accordant; as, to attune the voice to a harp.