Praise a key speech (9)

I believe the answer is:

adoration

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

'a key speech' is the wordplay.
'key' becomes 'd' (musical key).
'speech' becomes 'oration' (oration is a kind of speech).
'a'+'d'+'oration'='ADORATION'

(Other definitions for adoration that I've seen before include "high esteem" , "praise" , "Great affection" , "Deep love and respect" , "Worship, veneration" .)

I've seen this clue in The Times.

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