Did you know Johnny Cash recorded some songs in German? Here are a few recordings at YouTube:

WER KENNT DEN WEG? (Who knows the way?) – a version of I WALK THE LINE

WO IST ZUHAUSE, MAMA (Where Is Home, Mama?) - a version of FIVE FEET HIGH AND RISING

VIEL ZU SPÄT (Much Too Late) – a version of I GOT STRIPES

There are more, which you can find by following links.

I don't know enough German to transcribe them.