I created a vanilla bard to stand in my tavern and play. I want him to just play instrumental, I don't want him to sing.

He works fine and plays through the instrumental songs, then he stops and doesn't play anymore, even If I wait around for hours. How can I make him play continuously. The difference when he stops playing is not good, the place falls into silence so I really need him to play all the time.

Here is his http://i110.photobucket.com/albums/n99/Shezrie/Bard_zpspbl9pox3.jpg, he uses a basic default 'DefaultSandboxEditorLocation256' AI package.

Is there any way to make him just play?