Performer among celebrities in Germany (6)
I believe the answer is:
singer
'performer' is the definition.
(singer is a kind of performer)
'among celebrities in germany' is the wordplay.
'among' indicates the answer is hidden within the clue.
'SINGER' can be found hidden inside 'celebrities in germany'.
(Other definitions for singer that I've seen before include "Eg, tenor" , "One performing song" , "Performer of songs" , "Song performer" , "Make of sewing machine" .)