Shower head MP3 player and speaker

Come on now – there’s no reason to be shy about it. I know that you do belt out a tune once in a while when taking a shower, which is why this concept shower head will definitely go down with you. IT features a detachable digital MP3 player that allows music transfer from a computer (in dry conditions, of course), and can be docked to your shower head. By doing so, the external speaker will be activated, allowing you to sing with the accompaniment of your favorite band or singer. This concept shower head MP3 player and speaker is the brainchild of designer Hae Lim, and it sure looks like a pretty viable idea. I just wonder which would be the better route in terms of power – a rechargeable battery within, or using tried-and-tested AA batteries.