Auxiliary °7 chord

This is a °7 chord that doesn't have any root movement (unlike ascending °7 or descending °7 chords). It's simply an alteration of an "existing" chord.1

Common progressions:

  • I°7 -> I
    • This is a "delayed resolution"
  • I°7 -> I6
    • Only 2 notes move
  • V7 -> VIm7/b7 -> V°7 -> I