Marty O’Donnell, Bungie’s in-house composer and the legend responsible for Halo’s iconic score, as well as the studio’s next highly anticipated project, says he has been ”terminated…without cause” by the studio’s higher-ups.

I’m saddened to say that Bungie’s board of directors terminated me without cause on April 11, 2014.

— Marty O’Donnell (@MartyTheElder) April 16, 2014

After Joseph Staten’s departure from Bungie, O’Donnell was one of the last employees still working at the studio from its days prior to Microsoft’s purchase of the company in 1999. In addition to his work on the Halo series, O’Donnell has done a ton of sound work, including the Flintstones Vitamins jingle.

With this news breaking only a few hours ago, it’s likely that this story is still in development, so we’ll be sure to update you as it progresses. All I can hope for is an open position available at 343, but if not, I’m sure O’Donnell won’t have trouble finding a new gig. In the meantime, here’s some of his most famous work for your consideration.