Sing about hearty clowns, e.g. when broadcasting (6)
I believe the answer is:
sowing
'broadcasting' is the definition.
(broadcast can mean to sow seeds)
'sing about hearty clowns e' is the wordplay.
'about' indicates putting letters inside.
'hearty clowns e' becomes 'ow' (I am not sure about this - if you are sure you should believe this answer much more).
'sing' enclosing 'ow' is 'SOWING'.
'g when' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for sowing that I've seen before include "task in garden" , "Planting (seeds)" , "Broadcasting" , "Placing seeds in the ground" .)