The most common and most likely answer to this crossword clue is the 7 letter word STRAUSS
I've seen this crossword clue in The Guardian
S
T
R
A
U
S
S
More clues leading to the result STRAUSS
- Composer’s art’s reflected by American symphony primarily
- Small supporter welcomes a composer
- Stars gathered around American 1D
- Note-writer to find out about craft reversing
- Cricketer, who found acclaim with The Bat
- Barman‘s small tie hides one
- England’s captain, once one of several scorers
- 34, scorer
- Composer who often made decision on pitch?
- Small support sustaining a composer
Buddy explains!

The straight part
We know that "composer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case composer = strauss.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.