F+ (pitch)

F+ is a musical pitch approximately 20 cents sharp of modern concert F (500 + 20 = 520 cents), and is primarily associated with the Northumbrian smallpipes.[1] Play 

Wolf fourth on C (F+): 27:20.

Similarly, composer Ben Johnston uses a "−" as an accidental to indicate a note is lowered 21.51 cents, or a "+" to indicate a note is raised 21.51 cents (which is the width of a syntonic comma Play ).[2] 498.04 + 21.51 = 519.55 (Just perfect fourth + syntonic comma = F+).

See also

References
  1. Say, Barry. "A short guide to Northumbrian Smallpipes", NSPIPES Homepage.
  2. John Fonville. "Ben Johnston's Extended Just Intonation- A Guide for Interpreters", p.109, Perspectives of New Music, Vol. 29, No. 2 (Summer, 1991), pp. 106-137. and Johnston, Ben and Gilmore, Bob (2006). "A Notation System for Extended Just Intonation" (2003), "Maximum clarity" and Other Writings on Music, p.78. ISBN 978-0-252-03098-7.
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