Possible Clues:

• Will need to be composed, as one of those laid out on bed has the blues
• Pianist's reference pages
• Works on paper
• Will need to be composed, as someone could be sleeping on this rock
• Score keeper?
• Song publisher's output
• She arranged to stay tight-lipped, so, thus noteworthy to musicians
• Pianist's supply
• She distributed semi-cut paper with notes
• Pianist's reference material