The XH A1 is a great camcorder and will do all you want.
Can you use it though? Like all tools, it's only as good as the operator. If your camera(wo)man can use the manual controls, the dozens of settings and "looks" and knows how to get the best out of the camera, it will do everything you need for music videos.
On the other hand... If your camera operator doesn't have the skill and knowledge to use the XHA1 to its full potential, then you'd be better off getting something a bit simpler (and cheaper) at first.