The volume for "music" cannot be found

I'm trying to open up "music" in the sidebar of my finder. I get a message telling me that the volume for music cannot be found. I just bought the computer used. How can i fix this problem?

did you reboot and see if it worked then?

Also you could drag the folder out of the sidebar, then go to your home folder, and drag the music folder back into the sidebar.

i tried to restart nothing happened. Tried to drag "music" from the sidebar into the main window and it disappeared?

When i dragged music in the main window of finder not only the music icon disappeared along with the movies icon and pictures icon.