I wonder if he is returning for the next one and whether or not he'd be inspired to improve upon his ideas the same way as some of his other recent sequel works. With the exception of Incredibles 2, all his sequel works have seen tremendous improvements over the originals.
Album's overlong (which is better than being too short I suppose), but War of the Planet of the Apes is another Giacchino I put on now and then when in the right mood.
