Crossword Genius

Force to drop name in part for play (4,4)

Ross

I believe the answer is:

peer gynt

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

'play' is the definition.
(I've seen this before)

'force to drop name in part' is the wordplay.
I cannot really understand how this works, but
'force' could be 'g' and 'g' is found within the answer.
'name' could be 'eryn' and 'eryn' is located in the leftover letters.
The remaining letters 'pet' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'for' is the link.

Can you help me to learn more?

(Other definitions for peer gynt that I've seen before include "(Son of Ase in) Ibsen play" , "Ibsen drama" , "Titled hero" , "Solveig loved him (Ibsen)" , "Ibsen play (for which Grieg wrote music)" .)

I've seen this clue in The Telegraph.
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