Since his very public firing from Bungie in 2014, composer Marty O’Donnell has been sharing some of his music on his YouTube channel. The bad news is that most of that music, including an unused Destiny piece entitled Music of Spheres, is still copyrighted by his former employer. The court has issued the Halo and Destiny composer to return any and all materials related to the music and issue a public statement to his fans on his personal YouTube channel that they must also destroy any copies of said music and materials.
As reported by Eurogamer, O’Donnell was instructed:
Post a message, the wording of which the parties agree to, on his Twitter, YouTube, Bandcamp, and Soundcloud sites/channels stating that he did not have legal authority to possessor provide material related to Music of the Spheres or Destiny and asking anyone who previously downloaded any such assets to delete them and refrain from sharing and will destroy any copies of them.
Marty states in his video, which you can see above, that:
I do not have, and have not had since at least April 2014, the legal authority to possess or distribute non-commercially available material related to Destiny or Music of the Spheres, including material I composed or created while working for Bungie. This material is owned by Bungie. If you posted any of these assets on a website or other publicly available platform, you should remove the content immediately. If you have copies of these assets, you should refrain from sharing, and destroy any copies of them.
O’Donnell worked for Bungie from 1999 until his firing of 2014, composing the music for the original Halo trilogy and worked with Paul McCartney to create Destiny’s themes. He successfully sued Bungie over his shares in the company in 2015.