Song is “Smoke Gets in Your Eyes”. 1st 18 measures are in G major, one sharp.The next 6 measures are in E flat, 3 flats. E natural is 3 semi tones before G. So E is a minor of G and E is also the 6th note in the G scale making it a pure minor. Would this be a case of E minor becoming E flat minor?
I have the music to “Smoke Gets in Your Eyes” in G major. 1st 16 measure are in G major. Next 6 measures are in E flat. Then last 10 measures switch back to G major. I all sounds right. How does the E flat part logically fit into the G major scale.