The most common and most likely answer to this crossword clue is the 7 letter word CELLIST
I've seen this crossword clue in The Times
C
E
L
L
I
S
T
More clues leading to the result CELLIST
- Musician in small room is close to vocalist.
- Where convict is beginning to train musician
- In Paris, it’s wrapping bad back for player
- Musician still playing after church
- Maybe Irishman gathering lily in bower
- Peter’s the first one on the fiddle?
- Irishman, perhaps, crossing line is player taking a bow
- One on the fiddle from prison is tense
- Player needing room is first to tackle
- Secretive group is on top of termination in contract for player
Buddy explains!

The straight part
We know that "player" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case player = cellist.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 CELLIST mean?
CELLIST noun- Someone who plays the cello.