Glinda and Elphaba from the musical, Wicked. Specifically tried to get across the feeling of the song, For Good.
"Like a comet pulled from orbit, as it passes the sun, like a stream that meets a boulder, halfway through the wood.
Like a ship blown from its mooring, by a wind off the sea, like a seed dropped by a sky bird, in a distant wood.
Who can say if I've been changed for the better, but, because I knew you, I have been changed.... for good."