Unless there is some other meaning to C-sharp other than the musical reference I see no value.
Yeah, you could base a wiki on songs based in C# but if I rememebr correctly that isn't an easy kep to work with (7 sharps in major, 9 in minor (including Fx and Cx).
You could have fun with it, though, a wiki based on very complex concepts, or using all available resources (cinde in C# all nots are sharped naturally in Major, all are sharped, F and C are double sharped in Minor).