If you're doing any indoor concert shooting, be aware that compacts are poor cameras for low-light photography. The images they produce at anything other than their lowest ISO are very noisy/grainy, often with distracting color artifacts. The lower the number, the less light sensitive the camera becomes but the images are of a very high quality. The higher the number, the opposite. That means you'll need to use a high ISO speed to shoot a concert which, on a compact camera, will produce grainy images. I'm not trying to dissuade you, just be aware there are some compromises.
I have a Canon G7 that doesn't get used much since I got the D200, but it's still a nice all-around compact that I'd recommend. I've also read that the Canon A640 takes almost exactly the same pictures and it's cheaper... it just doesn't have all the bells and whistles (things you probably won't miss for the most part).
Hope this helps.
[Oh wait... the A640 uses AA batteries. The G7 uses a Li-ion.]