perfect pitch

noun3

1. •
   The ability to identify a note by name on hearing it, or to re-create a specified note from memory, without the benefit of an externally provided reference pitch.
2. •
   (figurative) By extension, a reliable innate sense of exactly what is true, appropriate, or needed in a given particular situation.

   • Bujalski has perfect pitch: an instinct for how language meanders, and the lacunae it circles around. — 2015
3. •
   The exact pitch of a note, described by its frequency in vibrations per second.