There were so many excellent guesses, but the truth is that this music is a piece called ‘Advent’ and it was written by my father, Ólafur Óskar Axelsson, who is an architect and composer. I have so many childhood memories of dad playing this little psalm softly on our Steinway, late at night, during advent ☺️ We were both overjoyed with your reaction so we’d like to make the sheet music available for those of you who would like to play it for yourselves. You can download it by clicking the link in my bio to join my newsletter and following the link in the confirmation email.