Real Evidence

Exploration Stage: Shooting Star Cabaret
From: Mr. Black
Description: I was informed that Sophia found a song that caused a projection to appear, and it was of a musician who tried to stop a bullet with his saxophone. Although the murder attempt was committed a long time ago, I'm sure that the used bullet cases are still here somewhere! Follow me, I know where to look for them!
Completed: Great job! The used bullet cases you found have their bullet caliber indicated on them. Let's compare it with the hole in the saxophone. The diameter is the same. Hmm, did he get in somebody's way?