Chording Piano Pages   William Wieland
The right hand simply plays a cadence pattern. The left hand plays a single line bass so it does not become muddy.
Printed Music C major Cadence Pattern Keyboard Diagram

Major Cadence Patterns in all 12 keys: TriadsV7 chordsFull V7 chords
Many songs can be accompanied with cadence pattern chords alone. Note the different rhythms.