Rings of Akhaten Speech
Clara and Merry flee back to the ceremony and the Doctor faces the creature, realising it feeds off memories, stories, and feelings. He tries to overfeed it by offering the sum total of his Time Lord memories; Merry also leads the citizens in a song of hope, confusing Akhaten.

Lullaby for a Sleeping God
The Doctor takes Clara to the Rings of Akhaten to attend an ancient and ongoing ceremony, a song sung to keep an angry god asleep. But as the little girl Merry feared something has gone wrong...

Credit: BBC Worldwide