In the Season 9 finale of Doctor Who, “Hell Bent” the Doctor (Peter Capaldi) plays a song of remembrance.
In “Hell Bent,” Doctor Who returns to the desert, causing a coup in Gallifrey and revisiting America for a last goodbye. It’s taken billions of years, but the Doctor has finally returned to Gallifrey for a less-than-joyful reunion with his fellow Time Lords. In “Hell Bent” it’s revealed that the struggle the Doctor endured in “Heaven Sent” was less about keeping the secret of the hybrid and more about establishing a bargaining chip to save Clara. Peter Capaldi uses his impressive ability to convey intensity and power even while being still, increasing the drama of “Hell Bent.”
“Face the Raven” leaves us mourning the loss of another Doctor Who companion with the death of Clara Oswald. Though it had been announced that 
The Supernatural Fox Sisters 