Though you asked for an example... but maybe its best to show a counter-example instead? Here's the Imperial Death March played in a Major-scale, instead of a minor scale. [this video] If everything was in an 8-note (no accidental, transpositions only) measure, they'd sound like "Vader's redemption". To sound sad, you MUST shift to a minor key. A minor key has sharps and flats to create tension. Any "sad sounding" song cannot be properly played in a major key.
The canonical video on the subject: [link] Some people will naively say "All music has pentatonic! Universal!" but ignore vital cultural context. One example in the video is ragas: they can look a lot like Western scales and modes, but they have a time and context. Western music also has a time and context, but it doesn't stand out as much to us unless someone goes full ham breaking that context like with the Imperial March in a Major mode: [this video] It changes the mood from "this is the bad guys!" to something more positive and triumphant.
Imperial March in major mode changes mood to triumphant
For those who suspect HN may have been infested by Rebel shills and their fake news: [this video] Anyone know where I can find the drawing of the stormtrooper in a locker room, complete with I M P E R I A L knuckle tats? I'm doing my part!
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