Artist Norway greatly takes to heart (5)
I believe the answer is:
munch
'artist' is the definition.
(painter Edvard Munch)
'norway greatly takes to heart' is the wordplay.
I cannot quite see how this works, but
'norway' could be 'n' and 'n' is found in the answer.
'greatly' could be 'much' (I've seen this in another clue) and 'much' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for munch that I've seen before include "Chew steadily and vigorously" , "Edvard -, Norwegian artist (The Scream)" , "Eat audibly; painter" , "Painter of The Scream, d. 1944" , "who put one screaming on the canvas?" .)