Calling up (7)
I believe the answer is:
evoking
'calling up' is the definition.
('evoke' can be a synonym of 'call up')
This is the entire clue.
(Other definitions for evoking that I've seen before include "Calling up, emotions say" , "Calling up memory or emotion" , "conjuring" , "Bringing to mind" , "Summoning" .)