Key

[baka-ranger]

Key doesn't have an original version, I remember reading some interview for RAINBOW or something that she used the~eternal tie ver.~ subtitle cause she wanted to make Key a song that could be sung at a wedding or soemthing along those lines...

While Memorial Address, the take 2 version I think refers to how its kind of a cover. She took the music from the song Kumo by LOVER SOUND TRACK and just rewrote the lyrics.

At least that what I think, from my knowledge of Ayu's songs LOL