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In a baroque binary minuet by J.C.F. Fischer , starting in F major , the first phrase ends with E dim ( E-G-B flat ) viio --> I (F-A-C ) . The soprano notes move from B flat to A. Can this cadence in F major be named as AC or IAC ( Authentic Cadence or Imperfect Authentic Cadence) ?

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  • May I ask which one? I only ask because, in my experience, it's exceedingly rare for a vii° triad to be in root position, and I'd love to have the example marked for future reference. – Richard Mar 6 '20 at 3:20
  • @Richard - This binary minuet ( 8m + 16m = 24measure ) is found in Level 9 Harmony , 2018 Edition - Official Examination Papers - The Royal Conservatory of Music -pages 44 & 45 , Published by RCM Publishing , an imprint of The Frederick Harris Music Co.Ltd; 273 Bloor St West , Toronto , Ontario , M5S 1W2 , 1-800-387-4013 . www.rcmpublishing.com ( I will be writing this exam this May 2020 ) – Thomas Mar 6 '20 at 6:43
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    Would you post a screen shot? – Brian THOMAS Mar 6 '20 at 13:30
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    @Richard, is root position viio found when the tonic is minor? I seem to recall there is a difference depending on major/minor tonic. – Michael Curtis Mar 6 '20 at 15:24
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    @Thomas Copy and paste :-) – Richard Mar 8 '20 at 2:12
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This is an imperfect authentic cadence because 5-1 is not the bass.

See https://music.utk.edu/theorycomp/courses/murphy/documents/cadences.pdf

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  • Imperfect Authentic Cadence ( IAC ) because 5-1 is not the bass. Marvelous Donald Hosek ! Great summary sheet on cadences too. – Thomas Mar 8 '20 at 2:15

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