Pitch-perfect

adj.capable, joyfulprofessional

Meaning 1

Accurate in musical pitch throughout a note or performance.

Reach for it when describing singing or playing whose notes land exactly where intended

The quartet's pitch-perfect final chord seemed to suspend the room in silence.

everyday
in tune
for notes matching the correct musical pitch
not when In tune may describe basic correctness without exceptional control.
formal
faultless
if the whole musical execution contains no discernible error
not when Faultless covers rhythm and technique too, so it is a wider judgment.
literary
true
when a tone rings at the intended pitch without wavering
not when True is ambiguous outside a clearly musical sentence.

Exactly suited to the emotional tone, audience, or occasion.

Reach for it when praising language or execution that gets a situation's tone precisely right

Her pitch-perfect toast balanced affection with one gentle joke.

playful
spot-on
for an informal verdict that something was exactly right
not when Spot-on is too casual for ceremonial or analytical writing.
professional
tone-perfect
when communication matches the desired voice exactly
not when Tone-perfect is specialist language and less familiar to general readers.
professional
well-judged
if tact and sound decision-making produced the right effect
not when Well-judged emphasizes deliberation, while pitch-perfect can feel effortless.
formal
apt
where a choice fits its context with concise precision
not when Apt can be merely suitable rather than exceptionally well judged.

pitch-perfect harmony
Their pitch-perfect harmony carried cleanly across the courtyard.
pitch-perfect response
The chair offered a pitch-perfect response to the unexpected tribute.
pitch-perfect performance
A pitch-perfect performance closed the festival on a radiant note.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.