Clue seven: Using music notes to crack the code

Look for the musical notes across the street from Scott Joplin's Maple Leaf Rag. You'll only need seven of the nine, discounting the whole note and the quarter rest. From there, apply the fraction of the note to the number provided. The first note to the left is an eighth note, so you'll take 1/8 of 120 which is 15. The 15th letter of the alphabet is O!