Tease performing in Somerset town (7)
I believe the answer is:
taunton
'somerset town' is the definition.
(I've seen this before)
'tease performing' is the wordplay.
'tease' becomes 'taunt' (synonyms).
'performing' becomes 'on' (as in being on stage).
'taunt'+'on'='TAUNTON'
'in' acts as a link.
(Other definitions for taunton that I've seen before include "County town of Somerset" , "Home of Somerset CCC" , "SW town" , "English town" , "Somerset's county town" .)