Strain of electronic glam rock band turned up (5)
I believe the answer is:
exert
'strain' is the definition.
(I've seen this in another clue)
'electronic glam rock band turned up' is the wordplay.
'electronic' becomes 'e' (as in e-mail or e-books).
'glam rock band' becomes 't rex' (I've seen this before).
'turned up' says the letters should be written backwards.
'trex' reversed gives 'xert'.
'e'+'xert'='EXERT'
'of' is the link.
(Other definitions for exert that I've seen before include "Bring into use, say strength" , "Put to use, vigorously" , "Cartoon 4 across" , "Make use of" , "Strain" .)