Tenor went off and ran (7)
I believe the answer is:
trotted
'ran' is the definition.
(trotting is a kind of running)
'tenor went off' is the wordplay.
'tenor' becomes 't'.
'went off' becomes 'rotted'.
't'+'rotted'='TROTTED'
'and' acts as a link.
(Other definitions for trotted that I've seen before include "Moved at fairly fast gait" , "moved at a fair pace" , "Scampered" .)