This is a song from the album Glorious by Foxes.
Two versions are available: A short and an extended one (which has another chorus at the end and is more difficult).The background instrumental was made by _SLP.
You can listen to the song on YouTube or download it for free on Sheethost (PDF, MIDI or MuseScore files). Have fun!
Glorious Short Ver. (piano)
Glorious Extended Ver. (piano)