Foreigner Lead Singer I Have Not Solved The German/Hoff Mystery

1/2/2015 6:53 AM PST

Foreigner Lead Singer Kelly Hansen -- I Have Not Solved the German/Hasselhoff Mystery

EXCLUSIVE

The Germans sure love themselves some David Hasselhoff, but Foreigner front man Kelly Hansen is just like the rest of us ... he is clueless as to why.

Hansen and fellow Foreigner member Bruce Watson arrived at LAX on New Year's Day and our photog just had to know if they understood the Hoff phenomenon following his insane NYE concert in Berlin.

But alas, while Hansen -- who performed with Foreigner in Berlin just this past November -- fully acknowledged Hoff's bona fide rockstar status over there ... he just couldn't put his finger on why.

The mystery continues ...