In the original client, the title of the song, the songwriters, the tempo, and the copyright are displayed at the top of the score.
This should be pretty simple to add in now that the score is centered both vertically and horizontally in the window.
Screenshot from the C++ windows client:
![image](https://user-images.githubusercontent.com/1944608/29251681-1a7ec2f0-800e-11e7-93df-f00560ea7b7c.png)