A bird that has lost its voice

Exploration Stage: Shaded Patio
From: Sophia
Description: Oh my god, this really sucks! Avocado again. And this time he was pretty mad at me and stole my best microphone from the stand. Go check it out.
Completed: Yeah, that's my mic stand. The microphone has been removed, though. All that was left was the killer's note: "Little bird, if you want to lose your voice, just keep singing. Please, don't ask me any more questions. I'm scared!