Generous fellows who compose rondos (6)
I believe the answer is:
donors
'generous fellows' is the definition.
The answer and definition can be both people as well as being plural nouns.
Perhaps there's a link between them I don't understand?
'compose rondos' is the wordplay.
'compose' indicates anagramming the letters.
'rondos' with letters rearranged gives 'DONORS'.
'who' acts as a link.
Can you help me to learn more?
(Other definitions for donors that I've seen before include "They give to others, maybe blood" , "Givers as of blood" , "presenters" , "They give things including blood" , "They give, blood say" .)