After-dinner speaker perhaps disturbs our trance (9)
I believe the answer is:
raconteur
'after-dinner speaker' is the definition.
(someone telling anecdotes)
'disturbs our trance' is the wordplay.
'disturbs' indicates anagramming the letters (I've seen 'disturbed' mean this).
'our'+'trance'='ourtrance'
'ourtrance' with letters rearranged gives 'RACONTEUR'.
'perhaps' acts as a link.
(Other definitions for raconteur that I've seen before include "One who tells amusing tales" , "He's good at telling stories" , "Teller of anecdote" , "One used to telling stories" , "One relates" .)