SINGING GLITCH

I let my sim sing for a few hours and let the time pass fast, when I slowed the time down, I heard two voices singing now, so I let my sim stop singing, but her voice can still be heard, I tried to travel and go back to my home, exit to main menu and go back, and I sold the mic and bought it again but she's still singing. My sim works fine but the singing voice won't go away and It's so annoying!

It's very annoying, but it also happens with the original bought games.
Try to make it a choir.

It is annoying!! The only thing that worked for me was moving my household out. I don't know it'll be fixed when they move back in the same house.

Ow and when it happens again, quit game without saving