Firework's bridge
Wide Awake when the chorus is sang for the second time and she kinda repeats the lyrics in the background (i'm letting go tonight
yeah i'm letting you go)
Not Like The Movies just after the bridge it goes silent and it's just her voice and the piano
Thinking of You at the very end of the song when she sings
''And bust in the door/And take me away/Oh no more mistakes and then after that it's more silent and she sings
'Cause in your eyes I'd like to stayyeeeeyaahhhaaaa. woo that silent part always gets me

Dark Horse just when she's about to sing the chorus for a second time there's sex noises in the background
Before you give it all to me and then
ahhhhhhh in the background and then right before that chorus she's like
Give it all to meeaahhhhhhhh. I love that
meeaahhhhhhhh part