For Christa ( original tune ? )

This is my first attempt to make an original tune to a backing that was made as a "challenge BT" at the " Shadows Arena "- Read more information about this starting middle of this video.
It was my honest intention to create an own melody - if anyone thinks he already
know this melody just tell me. I don`t intend to make any copyright infringements.

Видео For Christa ( original tune ? ) канала BurnsErnst