page_title: Piano tuning
hierarchical_section_title: Piano tuning
caption_attribution_description: Svenska: Pianostämmare André Studencki stämmer ett piano på en kulturförening i Malmö 1987.
context_page_description: Piano tuning is the act of adjusting the tension of the strings of an acoustic piano so that the musical intervals between strings are in tune. The meaning of the term 'in tune', in the context of piano tuning, is not simply a particular fixed set of pitches. Fine piano tuning requires an assessment of the vibration interaction among notes, which is different for every piano, thus in practice requiring slightly different pitches from any theoretical standard. Pianos are usually tuned to a modified version of the system called equal temperament.
  In all systems of tuning, every pitch may be derived from its relationship to a chosen fixed pitch, which is usually A440, the note A above middle C. Note that for a classical piano and musical theory, the middle C is usually labelled as C₄; However, in the MIDI standard definition, this middle C is labelled C₃. In practice, a MIDI software can label middle C as C₃-C₅, which can cause confusions, especially for beginners.
  Piano tuning is done by a wide range of independent piano technicians, piano rebuilders, piano-store technical personnel, and hobbyists.
context_section_description: Piano tuning is the act of adjusting the tension of the strings of an acoustic piano so that the musical intervals between strings are in tune. The meaning of the term 'in tune', in the context of piano tuning, is not simply a particular fixed set of pitches. Fine piano tuning requires an assessment of the vibration interaction among notes, which is different for every piano, thus in practice requiring slightly different pitches from any theoretical standard. Pianos are usually tuned to a modified version of the system called equal temperament. (See Piano key frequencies for the theoretical piano tuning.)
  In all systems of tuning, every pitch may be derived from its relationship to a chosen fixed pitch, which is usually A440, the note A above middle C (261.626 Hz). Note that for a classical piano and musical theory, the middle C is usually labelled as C₄ (as in scientific pitch notation); However, in the MIDI standard definition (like the one used in Apple's GarageBand), this middle C (261.626 Hz) is labelled C₃. In practice, a MIDI software can label middle C (261.626 Hz) as C₃-C₅, which can cause confusions, especially for beginners.
  Piano tuning is done by a wide range of independent piano technicians, piano rebuilders, piano-store technical personnel, and hobbyists. Professional training and certification is available from organizations or guilds, such as the Piano Technicians Guild. Many piano manufacturers recommend that pianos be tuned twice a year.
caption: Tuning an upright piano
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