Here’s an example - one of the only examples, I think - of a pop song where the song begins with the bridge. That’s one way of putting it, at any rate - one could also say that it’s an intro that’s later re-used as a bridge. But any way you describe it, that sequence of chords only appears in two places in the song: at the very beginning, and at 2:14 after the second chorus.
Likewise, here is a good example of a classic power-pop anthem that creates a very simple, but effective, bridge at 2:02 by taking the same exact pattern of the verse but moving the chord up by a fourth for a few measures.
Sometimes the bridge of a song (4:07 to 5:17) will be so elaborate, it’s practically its own song with its own intro, verse, and chorus:
And other songs simply dispense with a bridge altogether:
