For example playing the Little Drumer:
https://m.youtube.com/watch?v=ymkNGpkb7zc#fauxfullscreen
Recorded with an iPad mini and its mic.
Left hand plays harmony or chords. The little finger normally can play the lowest note in frequency ie bass. The right hand can play the melody.
135 (harmonic triad ie adding the 3rd and 5th to bass) with respect to bass is used in this example for example G bass B D. Exception is G46 ie G C E on 2nd bar which is an invention of C E G.
The principle of least change in music in not used on this example. It was tried to play all chords 1 3 5 for the shake of clarity in example.
See also Bach bass rules:
https://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
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