As the blurb states, Brane Živkovic's score played with the film at the Hollywood premiere. It is also the score mastered to the Park Circus DCP which has played various venues over the past six months (a few theaters opted to perform original live scores). While Brane's score is excellent -- it's very much the sound of The Grim Game for me -- I noted in my review that it was somewhat controversial. At times the composer decided to use no music at all, making The Grim Game something silent movies never were -- silent. I suspect that the alternate score by Steve Sterner will be a more traditional continues silent movie score.
Steve Sterner is a well known accompanist to silent films. In 2013, The New York Times profiled him as the Piano Man of the Silent Screen. He's also credited with the score for the restoration of Erich von Stroheim's Foolish Wives (1922).
The Grim Game will air twice on TCM on Sunday, October 18 at 8:00 PM (ET) and at 11:45 PM (ET). The TCM site does specify which time slot will feature which musical score. The Grim Game will be part of a special evening of "Lost and Found" silent films which also includes Sherlock Holmes (1916) starring William Gillette.
A big thanks to Meredith Secaur for uncovering this news.
UPDATE: According to our friends at the Houdini Muesum in Scanton and composer Steve Sterner himself, the first airing at 8:00 PM (ET) will be the Brane Živkovic score and the second airing at 11:45 PM (ET) will be the new score by Steve Sterner. Steve's score is an all original piano score that he recorded in August.
UPDATE 2: According to TCM and Grim Game producer Rick Schmidlin, "The reason the new piano score was created was so The Grim Game could be to presented live for those who do not have a budget for a quartet. Now The Grim Game will have a TCM approved live score when needed for screenings in this format."