Reading some of the posts from a year and a half ago, I recently started shaving while my 6 year old has a bath, she asked a lot of similar questions to micks daughter, and I didn't feel guilty about the time taken as we were both relaxing together.
And I think Simon and garfunkle would be great to shave to.
I used to have music on sudays and it was generally morose and or introspective. Ie Leonard Cohen or the flaming lips.