Modal-like Common Tones

One chord progression that is actually quite common in Bluegrass is the one that drops a whole tone from the Tonic chord and then to the Dominant chord. For example, in the key of "G", take the Tonic triad of G B D and drop to F A C then to the Dominant 7 chord D F# A C. Notice how the A and C notes of the Dominant 7 chord (D7) are also found in the F chord. The ear hears an abrupt change from the G chord to the F chord, but this tension resolves when the F chord resolves to the D7 chord, and when the tension of the D7 chord resolves to the G chord.
Try this in the common Bluegrass keys.