From MotD regular Rob P.: Canadian band The Guess Who released their breakthrough US hit, “These Eyes,” in 1969. It peaked at #6 on the US Billboard chart.
After a few verses, a string of direct modulations builds during the chorus (starting at 1:42); the tune reverts to the original key for the next verse at 2:40. 3:00 marks the start of chorus/outro, stacking yet more modulations until the fadeout, augmented by boffo amounts of strings and brass.