Wedding suggestions

My fiance has hired a string quartet to play during the ceremony of our wedding and I’m trying to think of some LOTR song that could fit either the exit or the signing of the registrer (legal bit for the UK that takes 10 mins) I don’t want anything too long but what would the community say are the options?

On a side quest I’ve read all the books and am keen to incorporate quotes from Tolkien or the films into my speech. Any suggestions welcome!