Musical characteristics Prelude in C minor, BWV 999
measures 1–7 of bwv 999
prelude in c minor set in 3
4 time. central motif consists of intersecting rhythms between upper , lower voice (what have been left , right hand). in right hand, sixteenth rest, followed seven-note sixteenth passage typically arpeggiates inversion of triad (ascending , descending , root), , alternating sixteenth rest–sixteenth note pattern in third beat. left participates having pedal tone quarter in first beat, rest, 2 eighth notes.
harmony
measures 8–14 (modulation occurring in mm. 11–14 highlighted]).
contrary title , key signature, less third of bwv 999 written in c minor. in measure 11, secondary leading-tone chord employed (namely, diminished f♯ seventh chord) modulate , lead ear g minor, dominant of original key. aside turn g major (mm. 34–38 , 42–43), , reemergence of c minor (mm. 39–41), g minor tonality dominates piece. on, upper voice repeated on several measures, left hand providing shifting harmonic background. example, measures 8–10 same in right hand, descending tones in left hand create expansion of tonic harmony.
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