Charming Pink Runechalk

Chalk One Up. As an action, you can use this chalk to draw a simple symbol. A creature must have an Intelligence score of at least 6 to draw these symbols. Identical symbols do not stack. You can draw up to 20 symbols with this chalk before it is completely used up.
  Music note on instrument. Tunes and repairs minor damage to the instrument instantly.
  Exclamation point on instrument. Music played on the instrument is three times as loud for one hour.
  Star on instrument Causes magical sparks to dance around you whenever you play the instrument within the next hour.
  Cross on instrument. Music played on the instrument can only be heard within 5ft.