No, this isnt the control panel for some WWII era drum machine, but it's not that far off. CSIRAC was Australias first digital computer and possibly the first computer used to play music. Although its output was pretty crude, even by the standards of 1950's electronic music, it was a good few years ahead of its time. This is a pdf link to an much more in-depth article from the Spring 2004 issue of the Computer Music Journal.