The most common and most likely answer to this crossword clue is the 5 plus 5 letter word SHEET MUSIC
I've seen this crossword clue in The Daily Telegraph
S
H
E
E
T
M
U
S
I
C
More clues leading to the result SHEET MUSIC
- Provider of printed notes for performers
- Printed notepaper?
- Sue chemist for falsifying papers with notes
- Miscues the shot, finding the score
- Score synthetic meth and use thus
- 22 across use poorly written notes
- Notepaper not bound to sell?
- Notepaper
- Leaves with scores the miscues ruined
- Loosely, it’s paper covered in notes
Buddy explains!

The straight part
We know that "Notepaper" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case notepaper = sheet music.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.