Sinatra dancing for skilled worker (7)
I believe the answer is:
artisan
'skilled worker' is the definition.
(artisan is a kind of skilled worker)
'sinatra dancing' is the wordplay.
'dancing' is an anagram indicator.
'sinatra' with letters rearranged gives 'ARTISAN'.
'for' acts as a link.
(Other definitions for artisan that I've seen before include "Skilled worker or craftsman" , "Egypt peninsula; holy Mount" , "one in command of craft?" , "Skilled worker at craft or trade" , "Skilled worker by hand" .)