Interestingly, 'loneliness' ('Einsamkeit') doesn't appear in it. The word is 'Zweisamkeit', as those with a basic knowledge of German numbers will know means togetherness ('ein' as in one, 'zwei' as in two). The song isn't telling us to watch out for ending up on our own, but to watch out for getting involved in the first place.
Interestingly, 'loneliness' ('Einsamkeit') doesn't appear in it. The word is 'Zweisamkeit', as those with a basic knowledge of German numbers will know means togetherness ('ein' as in one, 'zwei' as in two). The song isn't telling us to watch out for ending up on our own, but to watch out for getting involved in the first place.