The boy-child is a talented musician, and for several years played in bands. Co-ordinated through the Auckland School of Rock, the bands gave our pre-teen and others a chance to not only learn how to work together to create music, but opportunities to perform in front of (some quite large) audiences.
The focus was on writing original material, but they also performed covers. One that I particularly liked was The White Stripes song Seven Nation Army. It has a very catchy bass riff (which apparently was actually played on a guitar and digitally lowered an octave). Since the boy-child was at that stage a bass player, the riff was heard a lot around our house.
I found a recording of the kids playing this song, which reminded me just how young they were (my son was about 10 I think).
And here are The White Stripes.