From 3:10 to 3:18 (the part just before the final chorus)
Where she goes "WHAT ARE YOU WAITING FORRRRRRRRRRRRRRRRRRRRRRRRRRRRR" and the violin strings come on and the final chorus becomes explosive again. It's like when you're listening to the song in a sad mood and you hear that part, it makes you smile.
Also the violin part at the ending of the song where Ellie's vocals fade out too
