December 9, 201410 yr Which trailer? If it's about the first trailer, then it's the orchestral version of simple & clean. If you mean the second, it's either callled "teamwork" or "working together".
December 9, 201410 yr Author ty all wait no im talking about when he is fighting the heartless its goes like din din din din din din din Edited December 9, 201410 yr by Shana09
what song is it in kingdom hearts 3 trailer when hes fighting heartless