Here's some information about fanlistings and Aerith's Theme.

Fanlistings?
An explanation by TFL:
'A fanlisting is simply an online listing of fans of a subject, such as, a movie, actor, singer, video game etc (in this case Aerith's Theme), that is created by an individual and open for fans from around the world to join. There are no costs, and the only requirements to join a fanlisting are your name and country.'

Aerith's Theme
Information from Wikipedia:
A musical theme, associated with Aerith is played several times throughout the game. It is first heard during the flashback scenes with Aerith's mother at her house, and is repeated as she is struck down by Sephiroth. The piece Flowers Blooming in the Church is based on this theme. This piece is extremely popular among Final Fantasy fans, and has inspired an orchestral version, a piano version, and a vocal version performed by the artist RIKKI, who also performed Suteki Da Ne for Final Fantasy X, in the form of 'Pure Heart'. It is composed by famed Final Fantasy composer Nobuo Uematsu. A piano arrangement of the theme appears twice in Advent Children, and the track "Water" also echoes shades of the theme (as well as Tifa's, if one pays attention to the fast-paced "bells" in the song). The opening phrase of Aerith's theme appears just prior to the climax of the track "Divinity II", which shortly after — arguably in reference to her — includes as its final line the Latin phrase "Sola Dea fatum novit," or "Only the goddess knows fate." "Aerith's Theme" is also featured during the end credits of the movie.