The Florence and the Machine singer (tomorrow in Milan with Paolo Nutini, click here) - played an emotional show as part of the Summer Series at Somerset House in London where she visibly wiped tears from under her eyes and told the crowd she was having break from live concerts to work on new material.
Introducing a new track, she said: "I just got weirdly emotional backstage. I'm sorry. This is my last London show in a while. I've got to go away and write some new songs. But this is a taster. It's called 'Strangers and Chants'."
"Have I listened to her album? You'd have to have been hiding under a rock to miss it!"
Sara - who is heavily pregnant with their second child (-2 months left) - also admitted she had been preparing Noel for the evening's show by belting out her favourite tracks on the way down to the venue. While Noel affectionately rubbed her pregnancy bump, she said: "I love her! I was singing her stuff to Noel in the car on the way down."