"Not The End Of The World" Is A Trap-Pop Song With An Underlying Disco Beat It Is On Katy's Sixth Studio Album ''Smile''. The Song Was Written By Katy Perry Michael Pollack Madison Love Jacob Kasher Hindlin And Andrew Goldstein Production Has Been Held By Oscar Görres And Goldstein The Song's Lyrics Talk About How Harsh Criticism Isn't The "end Of The World"