I DID NOT MAKE THIS! I don't own Digimon! I'm not sure why there are German lyrics along with the Japanese.
Sorry the video quality is kinda crappy, this video is almost a decade old now.
Anime: Digimon Adventure (Footage from episode 21: "Home Away From Home"/"Koromon, the Great Clash in Tokyo!")
Song: Butter-fly Piano/Slow version (Digimon Adventure OP)
Artist: Yajima on NicoNico
Original Video: http://www.nicovideo.jp/watch/sm5615596
(You need an account in order to view it)
Download Link: http://www.megaupload.com/?d=DC2EIKXO
English Lyrics (Not translated by me):
I'll become a happy butterfly,
and ride on the glittering wind
I'll come to see you soon
It's best to forget the unnecessary things
There's no more time to be fooling around
What do you mean, wow wow wow wow wow?
I wonder if we'll reach the skies
But, wow wow wow wow wow
I don't even know what my plans are for tomorrow
After an endless dream,
in this world of nothingness
It seems as if our beloved dreams will lose
Even with these unreliable wings,
covered in images that tend to stay
I'm sure we can fly, on my love