Kesha was inspired to write "Learn to Let Go" by one of her friends who went through "the worst childhood imaginable."
The track was the first to be written for the album and was also based on Kesha's struggles while making Rainbow.
You have to learn to let go of those bad feelings and move forward.She has also described the song's title as "one of my mantras over the last few years.
The song was first performed live at the 2017 MTV Europe Music Awards on November 12.
Kesha appeared on The Graham Norton Show to perform her song live, on November 24.