Changing the Tonality from C Major to C Minor transforms this piece from bright and happy to dark and sad... Notice that the C major chord (I) becomes a C minor chord (i)... and that E (Mi) becomes Eb (Me), but the G7 (V7) chord remains unchanged... learn more... Composition & Improvisation: Case Study: Part 10 … Continue reading Composition & Improvisation: Case Study: Part 9 of 24: Change the Tonality