The center cam is just fine - no need to switch to the other ones as the quality difference is just so obvious. (Besides, I just don't wanna know whether you have a script for the stream or not. ;))
And that music is kinda confusing and not helping the content you want to provide. Check out Collen Ballinger for some vlog-like videos where guitar play suits fine. And then please focus on tech news OR guitar play and general chat.