Opening Formula

A cadence with the Discant Clausula in the bass, usually without syncopation and sometimes with a tonic pedal in the bass, is a common opening formula in Baroque pieces.

Here are a few examples. First in major:

In minor, the third chord is often replaced by a diminished triad or diminished seventh chord.

Discant Clausula in Eb minor
Variant of Opening Formula in Eb minor
J.S. Bach, prelude BWV 853

In minor with a pedal point:

Similar Variant in D minor
With added D pedal in the Bass
J.S.Bach, prelude BWV 926

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