Calls up the day before about fair, first of several (6)
I believe the answer is:
evokes
'calls up' is the definition.
('evoke' can be a synonym of 'call up')
'day before about fair first of several' is the wordplay.
'day before' becomes 'eve' (I've seen this before).
'about' is an insertion indicator.
'fair' becomes 'ok'.
'first of several' becomes 's' (1st letter of 'several').
'eve' going around 'ok' is 'evoke'.
'evoke'+'s'='EVOKES'
'the' is the link.
(Other definitions for evokes that I've seen before include "Draws forth from memory" , "Elicits (a response)" , "Calls up from memory" , "Brings to mind" , "Calls to mind" .)