Editing Concert pitch (section)

{{Short description|Reference point for tuning musical instruments}}
[[File:Transposing 2.png|thumb|A written C, top, on a B{{music|flat}} clarinet sounds a concert B{{music|flat}}, bottom.]]

'''Concert pitch''' is the [[pitch (music)|pitch]] reference to which a group of [[musical instrument]]s are [[musical tuning|tuned]] for a performance. Concert pitch may vary from [[musical ensemble|ensemble]] to ensemble, and has varied widely over time. The [[International Organization for Standardization|ISO]] defines international standard pitch as [[A440 (pitch standard)|A440]], setting 440 [[Hertz|Hz]] as the frequency of the A above [[middle C]]. Frequencies of other notes are defined relative to this pitch.

The written pitches for [[transposing instrument]]s do not match those of non-transposing instruments. For example, a written C on a B{{music|flat}} [[clarinet]] or [[trumpet]] sounds as a non-transposing instrument's B{{music|flat}}. The term "concert pitch" is used to refer to the pitch on a non-transposing instrument, to distinguish it from the transposing instrument's written note. The clarinet or trumpet's written C is thus referred to as "concert B{{music|flat}}".<ref>{{Cite web|title=Concert Pitch Transposition|url=https://bandnotes.info/tidbits/scales/transposition.htm|access-date=2021-02-17|website=bandnotes.info}}</ref>