Here is "Flutter", a Becky Unthank penned song for The Unthanks album "Mount the air"
(Rabble Rouser 9 February 2015).
About the album on The Unthanks´ site:
"The Unthanks invite you to Mount the Air.
An invitation to be free, weightless, airborne, to transcend reality, to enter your imagination, to raise the possibilities above the ordinary, to become one with nature, to give yourself up to nature and let the wind carry you to new places. To fly."