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Chords and Scales: Random Chords and Missing Tonality
Chords and scales only sound coherent if they're organized around simple frequency ratios that your brain has evolved to comprehend.. If you just play random chords, the music sounds just as unpalatable as a tune sounds if it’s based on a random scale. (Recall the imaginary chalk marks on the cello fingerboard.)
In the above example, C – G – C – pause – etc., tonality is not established. The C major chord could be the I chord if the key is C major. Or it could be the IV chord if the key is G major. And the G major chord could be the I chord if the key is G major. Or it could be the V chord if the key is C major.
Ambiguity prevails.