in tune

idiom

1

: in a state in which the correct musical sound is played or sung

adjusted the guitar until it was in tune

2

: in a state in which people agree with or understand one another

The president and his followers were clearly in tune.

—usually + with

The new supervisor is not in tune with the needs of the staff.

3

: in a state in which one thing agrees with or matches another

—usually + with

His formal clothing was in tune with the occasion.