Poet follows one in a slow tempo (5)
I believe the answer is:
dante
'poet' is the definition.
(Dante is an example)
'follows one in a slow tempo' is the wordplay.
I cannot really see how this works, but
'one' could be 'an' (I've seen this in other clues) and 'an' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dante that I've seen before include "Italian poet, writer of the Divine Comedy" , "Great Italian poet of 'The Divine Comedy'" , "La divina commedia poet" , "Thirteenth-fourteenth century Italian poet" , "Italian poet, 1265-1321" .)