The Australian singer and songwriter - Sia and the American singer, songwriter, musician and actor - Patrick Stump, will contribute their talents in music to 'Charming' -  an animated musical comedy concerning three princesses who discover they all have formally agreed to marry the same Prince Charming.

Sia, who started her career as a singer in the local Adelaide acid jazz band Crisp, has written two tracks for the flick, one of which is the song "Balladino," that she will perform herself. The other track, "Magical," will be performed by the American singer, songwriter and model - Demi Lovato, who stars in the film as Lenore. She will also serve as a music score executive producer. The 'Chandelier' hitmaker will also voice a character named Half Oracle.

Demi Lovato, who debuted as a child actress in the American children's television series Barney & Friends, stated, "I am thrilled to welcome my friend and hero Sia to the movie."

Patrick Stump, the lead vocalist, guitarist, pianist and composer of the American rock band Fall Out Boy, will write and co-produce the track "Trophy Boy," which will be performed by the Canadian-French singer-songwriter - Avril Lavigne, Ashley Tisdale (appeared in more than 100 TV advertisements) and the Chinese singer-songwriter, and musician - G.E.M. They are also playing Snow White, Cinderella and Sleeping Beauty, respectively.

The American actor, singer and television personality - famous for his role as Fez in the sitcom That '70s Show - Wilmer Valderrama, will be voicing the bad-boy Prince Charming.

Wilmer Valderrama, and producer John H. Williams said in a statement, "From our first meeting it was our goal to make Charming an animated film that makes a profound impact on pop culture with its music," "It is clear that with Demi, Avril, Ashley, G.E.M. and now the incredible Sia and Patrick, that we are well on our way to accomplishing that goal."

3QU Media's 'Charming' is written and directed by Ross Venokur.