I see he give the crowd to sing "you won't need it anymore" almost in every live concert. Why? This part contains the highest notes in the song, particular D5! Some people may come only to hear them! Not fair))
You're crazy. 3:16 he clearly sings it! It's just that the audience likes to sing along and this is their favorite part. Watch his billboard music awards versace on the floor, he sings everything himself.