This is my interpretation trying to play "als ich fortging" live - originally composed by Karussell I wouldn't call it really complicated but it still is really nice sounding to me and it reminds me on quiet a few things.

Some lines would be translated something like:
"nothing is infinite, turn around(...)"
Something about things and people changing, ending... very sentimental.

(Original German lyrics can be found here http://www.lyricstime.com/karussell.....ng-lyrics.html )