Grimes, the Canadian musician best known for her hit single “Oblivion”, has filed a petition in San Francisco Superior Court to establish a parental relationship with her three children with ex-boyfriend Elon Musk. The petition is typically used when the parents of a child are unmarried, and it is usually accompanied by requests for custody rights or child support. However, it does not appear that Grimes has made such requests as of Tuesday. A notice of alternative dispute resolution methods was also filed on the same day, and the outcome of the case remains uncertain.