Healing Incantation

Healing Incantation is a song sung by Rapunzel throughout the film to activate her powers of reversing damages, including complete regeneration of damaged tissues and organs as well as aging reversal to a certain degree. Mother Gothel seemed to be the first to sing this (or even created the song), and later taught it to Rapunzel.

Plot
The song is first heard at the beginning of the movie, when Mother Gothel found the magical golden flower, and used it to activated the flower's power and keep herself young. When Rapunzel is now the source of the power, she kidnapped her and used her for her own good. As she was getting older, a young Rapunzel also sang part of it.

Later, when Rapunzel and Flynn trapped when they want to run away from the soldiers, Maximus, and Stabbington Brothers, Flynn was injured. The night after they get out, Rapunzel healed Flynn's injured hand using the incantation song, leaving Flynn shocked.

She also sang this when Flynn is dying, even though her hair is cut, hoping that he would revive.

Lyrics
Flower, gleam and glow Let your power shine Make the clock reverse Bring back what once was mine

Heal what has been hurt Change the Fates' design Save what has been lost Bring back what once was mine

What once was mine