"Bergdoktor" star Mark Keller is a guest on "Immer wieder sonntags" on Sunday (14 May) He sings a cover of Udo Jürgens' "Was ich dir sagen will" The "Mountain Doctor" star gets surprisingly close to a studio guest and touches her hair. On social media, the bizarre strand of hair moment hasn't gone unnoticed.
"If Mark Keller could sing, it wouldn't be a disadvantage," one user mocks – quite merciless feedback.