I can't put my finger on it, but in many pop songs there exists a note that stands out from the song which sounds like it has:
- "gone flat"
- been raised/lowered a semitone
- gone into a minor key
Mind you I have limited musical knowledge so my descriptions may not be the most accurate, and I am only going by "feel".
It certainly evokes a "feel-good" emotion that I instantly recognize every time I hear it, but I've been trying to put a name on it for a while now.
Here's an example:
At 1:01 in Bruno Mars' "Grenade", the notes sang with the lyrics "take a bullet straight through my brain" seem to stand out from the rest of the song, especially on the word "through".
Any ideas?
Edit: As a follow-up to my question, I've done some looking and discovered that these same sounds (that evoke the same emotion) are used abundantly in Japanese music and occasionally in Western music. They use the terms "royal road" progression as well as Relative Multipolar Tonality. A nostalgic emotion is evoked.
Examples can be found in these videos: