User blog comment:Zathronas/Analysis by an author: Trailer "Yellow/@comment-6830001-20131224003836

Nice analysis. It's now almost sure that trailers are pre-Beacon, with the evidences you presented.

Now about your surprise analysis : could it be Summer Rose, as you discovered the full lyrics of Red like Roses part II a few days ago, bringing new material for analysis ? Just my guess though ^^