Pay attention, Edna and learn to shuffle (4,2,3)
I believe the answer is:
lend an ear
'pay attention' is the definition.
(I've seen this before)
'edna and learn to shuffle' is the wordplay.
'and' means one lot of letters go next to another.
'to shuffle' is an anagram indicator.
'edna' after 'learn' is 'learnedna'.
'learnedna' anagrammed gives 'LEND-AN-EAR'.
(Other definitions for lend an ear that I've seen before include "Hark" , "Pay attention" , "Listen attentively (to)" , "Listen - to borrower" , "Follow Mark Antony" .)