Prolific scorer from Down Under in auction? (6)
I believe the answer is:
mozart
'prolific scorer' is the definition.
(writer of musical scores)
'down under in auction?' is the wordplay.
'down under' becomes 'oz'.
'in' indicates putting letters inside.
'auction?' becomes 'mart'.
'oz' put into 'mart' is 'MOZART'.
'from' acts as a link.
(Other definitions for mozart that I've seen before include "Wolfgang Amadeus . . . . . . 18th century Austrian composer" , "Scorer" , "Composer of Don Giovanni, d. 1791" , "'Cosi fan tutte' composer" , "Wolfgang Amadeus . . . . . . , great Austrian composer" .)