The most common and most likely answer to this crossword clue is the 4 letter word BACH
I've seen this crossword clue in The Times
B
A
C
H
More clues leading to the result BACH
- Composer has group leaving out middle piece
- Composer's time to leave group
- Composer in group losing heart
- German composer's term of address for Welshman
- Prolific scorer from Hearts supporting defender mostly
- Set of loaves? With no time, he produced scores
- Britten primarily a children’s composer?
- He wrote Lutheran Masses in Welsh, my friend
- Group hasn’t time for composer
- He wrote music for half the band and part of the orchestra
Buddy explains!

The straight part
We know that "Prolific scorer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case prolific scorer = bach.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BACH mean?
BACH noun- (northern) A holiday home, usually small and near the beach, often with only one or two rooms and of simple construction.
- To live apart from women, as during the period when a divorce is in progress. (Compare bachelor pad.)