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]

Syntonic comma on C

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.^[2]^[3] 498.04 + 21.51 = 519.55 (Just perfect fourth + syntonic comma = F+).

References

^ Say, Barry. "A short guide to Northumbrian Smallpipes", NSPIPES Homepage.
^ 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
^ 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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[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

[3] 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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See also

References