Elvis etc tossed around a version of That's Life (4,2,3)
I believe the answer is:
cest la vie
'that's life' is the definition.
(I've seen this before)
'elvis etc tossed around a' is the wordplay.
'tossed' indicates an anagram.
'around' indicates putting letters inside.
'elvis'+'etc'='elvisetc'
'elvisetc' with letters rearranged gives 'cestlvie'.
'cestlvie' placed around 'a' is 'CEST LA VIE'.
'version of' is the link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for cest la vie that I've seen before include "Vets Alice (anag) - French expression of resignation" , "That's life for the French (1'3,2,3)" , "There's nothing we can do about it!" , "Whatever will be will be" .)