The Mystery of the Stolen Music is about the Boxcar Children getting to meet one of the touring orchestra’s violinists, Melody. Then one of the Mozart scores goes missing. The orchestra is supposed to be performing 4 of the original Mozart scores. The suspects are Melody, the conductor’s assistant Bob Weldon, and Janet Muler. The conductor’s room got ransacked. In the end, they figured out that it was Bob Weldon. They had many clues that led to each person, but in the end it was Bob.
It was an excellent book.