Sounds like German fellow finds peace in a wig (9)
I believe the answer is:
hairpiece
'a wig' is the definition.
(I've seen this before)
'sounds like german fellow finds peace' is the wordplay.
'sounds like' indicates a 'sounds like' (homophone) clue.
'german fellow' becomes 'herr' (German equivalent to 'Mr').
'finds peace' becomes 'piece' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'herr' is a homophone of 'hair'.
'hair'+'piece'='HAIRPIECE'
'in' is the link.
Can you help me to learn more?
(Other definitions for hairpiece that I've seen before include "A wig or switch to supplement scalp covering" , "rug" , "False addition to existing growth on the head" , "Switch, for instance" , "Using switch" .)