Solo cabaret turn in common market! (3,4,4)
I believe the answer is:
car boot sale
'common market' is the definition.
'car boot sale' can be an answer for 'market' (I've seen this before). I'm not sure about the 'common' bit.
'solo cabaret turn' is the wordplay.
'turn' indicates an anagram.
'solo'+'cabaret'='solocabaret'
'solocabaret' with letters rearranged gives 'CAR-BOOT SALE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for car boot sale that I've seen before include "Cheap market" , "Second hand market" , "Fair" , "field event?" , "Event involving trade conducted from the back of one's vehicle" .)