Hurried up with speed to provide commentary (7)
I believe the answer is:
narrate
'provide commentary' is the definition.
(I've seen this before)
'hurried up with speed' is the wordplay.
'hurried' becomes 'ran' (running is a kind of hurrying).
'up' is a reversal indicator (in down clue: letters go upwards).
'with' means one lot of letters go next to another.
'speed' becomes 'rate' (rate is a kind of speed**).
'ran' written backwards gives 'nar'.
'nar'+'rate'='NARRATE'
'to' acts as a link.
(Other definitions for narrate that I've seen before include "Relate - portray" , "Set forth" , "Tell the tale." , "Tell us the story" , "rehearse" .)