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tune

noun
  1. the adjustment of a radio receiver or other circuit to a required frequency
  2. the property of producing accurately a note of a given pitch
    “They cannot sing in tune.”
  3. a succession of notes forming a distinctive sequence
    air
verb
  1. adjust the pitches of musical instruments
    “My piano needs to be tuned.”
    tune up
  2. adjust for (better) functioning
    “tune the engine”
    tune up