"an electronic instrument requires no tuning"

• the extent to which a musical instrument, performance, or ensemble is in tune

  "at times the tuning is uncertain, and the solos often lack conviction"

• a particular key or set of pitches to which an instrument, especially one with strings, is tuned

  "E-flat tuning"

• the facility on a radio allowing for the reception of different stations, frequencies, or wavelengths

  "he fiddled with the tuning"

• the variation of the resonant frequency of an oscillatory circuit