Performer after whose crime many left Germany (6)

I believe the answer is:

singer

I'm a little stuck... Click here to teach me more about this clue!

'performer' is the definition.
(I know that singer is a type of artiste)

'crime many left germany' is the wordplay.
'crime' becomes 'sin'.
'left' indicates named letters should be taken away.
'germany' with 'many' removed is 'ger'.
'sin'+'ger'='SINGER'

'after whose' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for singer that I've seen before include "Someone of note" , "Diva perhaps" , "Eg, soprano" , "Coventry car firm" , "Warbler" .)

I've seen this clue in the Evening Standard.

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