Looking for an early trailer of the anime Yofukashi no Uta which features the song of the same name by Creepy Nuts. The manga and thus the anime were named after the song, and as a result, one of the early trailers used it, however the eventual OP was a different, original song, also performed by Creepy Nuts named Daten. This has caused the trailer I am looking for to be extremely difficult to search. After some effort I am hoping someone here has better luck.

To be clear, I'm looking for a shortish official trailer for the anime featuring this song:

https://www.youtube.com/watch?v=F6_zbnfxoBA

NOT Daten, the OP. It was one of the very first trailers.