To relax is to overwhelm chart stuff with light classics (9)
I believe the answer is:
lollipops
'light classics' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.
'to relax is to overwhelm chart stuff' is the wordplay.
'to relax' becomes 'loll' (I've seen this in another clue).
'to overwhelm' indicates putting letters inside.
'chart stuff' becomes 'pop' (I am not sure about this - if you are sure you should believe this answer much more).
'is' enclosing 'pop' is 'ipops'.
'loll'+'ipops'='LOLLIPOPS'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for lollipops that I've seen before include "Gobstoppers" , "Sweets on sticks" , "Sweets - popular works of classical music" .)