Play from Spike, productive American inspiring us (6,7)

I believe the answer is:

doctor faustus

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'play' is the definition.
Both the answer and definition are singular nouns.
Maybe there's an association between them I don't understand?

'spike productive american inspiring us' is the wordplay.
'spike' becomes 'doctor' (doctor can mean to spike or adulterate).
'productive american inspiring us' becomes 'faustus' (I can't explain this - if you can you should give a lot more credence to this answer).
'doctor'+'faustus'='DOCTOR FAUSTUS'

'from' acts as a link.

Can you help me to learn more?

(Another definition for doctor faustus that I've seen is " Play by Christopher Marlowe".)

I've seen this clue in The Times.

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