in tune

In agreement in musical pitch or intonation, as in It's hard to keep a violin in tune during damp weather , or Dave is always in tune with the other instrumentalists . [Mid-1400s]

In concord or agreement, as in He was in tune with the times . [Late 1500s] The antonyms for both usages, dating from the same periods, are not in tune and out of tune , as in That trumpet's not in tune with the organ , or The lawyer was out of tune with his partners .