Question: Were Chammak Challo and Ra.One created by Indian artists?
Sentence (from "Ra.One (soundtrack)"): Ra.One is the soundtrack album, composed by the duo Vishal–Shekhar, to the 2011 Indian science fiction film of the same name, written and directed by Anubhav Sinha, and starring Shahrukh Khan, Kareena Kapoor, Armaan Verma and Arjun Rampal in the lead roles.
Relevant evidence: Yes