Board Thread:Speculation House/@comment-15108745-20130810232149/@comment-23784953-20130811142823

I think I Burn is like the final version of Red Like Roses. Remember back when the Red Trailer began, the concept of RWBY was partially incomplete, so at that point, it was likely that Monty first thought of considering RWBY for the fantasy genre, thus the acoustic guitar(?). (I don't know what the exact string instrument used in the trailer so...)

Then, as the concept of RWBY became more and more clear, I Burn is born, a more modern version of Red Like Roses, this time incorporating the BGM of the other trailers, alongside Yang's portion.