If you listen to the very 1st Alles ist gut and compare it to the others you'll probably notice a bit of aggression/crack/distortion on the 1st syllable.
That could be addressed by manually reducing the level on the attack of that syllable OR copying & pasting another iteration from elsewhere in the song.
Definitely a sing a long story & melody.
Der Song ist auch gut


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe