> At any one time, yes, And changing keys mid-song is kind of passé, at least in popular music, isn't it? At least, the common practice of modulating up a key

> At any one time, yes, And changing keys mid-song is kind of passé, at least in popular music, isn't it? At least, the common practice of modulating up a key for a repeat chorus is a cliché. Edit: Then again, just now I was listening to a song that, while it doesn't have the clichéd upward key change, does move between two major keys. I'm guessing this song, as written, couldn't be played in just intonation. https://music.youtube.com/watch?v=ElsdmXU8dUw https://music.youtube.com/watch?v=ElsdmXU8dUw And yes, I know I have questionable taste in music.