A key change is when you change the key of a song (often at the last chorus of the song).

E.g. F# major to G# major is a key change.
So what's your favorite part of the song, Jim?
Oh, I love the key change at the last chorus. It gives you those chills.
by barkingmerc February 15, 2018
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An emotional crescendo in a situation. The point at which everything seems to kick off.
Angry Guy: Whadaya mean you've been seeing someone else!
Casual Observer Guy: Oh shit, here comes the Key Change.
by Jackelrayn June 27, 2006
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Multiple key changes in any sappy song used for dramatics and to manipulate emotions - an art especially exploited by Barry Manilow.
My choir director shouted out to us while we were singing, "Get ready for the Barry Manilow key change!"
by waterspout April 21, 2011
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Use this to shame your tone deaf mates when they start singing off key.
"THat's the way its gonna BeeEEeeE LiTtLE dARLIn"
"Ooh... key change!"
by 1300-dissapointment August 08, 2021
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