"South of Heaven's Chanting Mermaids" is a musical theme composed by Rodrigo y Gabriela for Pirates of the Caribbean: On Stranger Tides. It has a length of 5:38 and is the 6th track on the disc. This track never appeared in the movie.
Track description
The track mainly consists of guitar arrangements, along with the main theme of "Mermaids" from the soundtrack. Towards the end, a violin can be heard accompanying the guitars.