As he tuned the guitar, turning pegs and plucking strings, he noticed a weird rustling sound inside the body of the instrument. He bent over the sound hole and examined inside. There was a wad of paper resting there. He shook the guitar gently upside-down until the paper came falling out through the strings and onto the floor. It had been rolled up into a tight scroll with a thin red strand of yarn tied in a bow around it. As he unrolled it, he saw the note was addressed to him.
-from The Red String, Chapter 8, The Remnant