One of the most personal tracks is "Thank You," which speaks directly to his wife.

VOA: standard.2009.04.19

And Bolivia,interestingly, is one of the world's largest sources of lithium, which if you think we're all going to drive electric cars, is going to be a vital source."

VOA: standard.2010.04.21

"There's a classic one here which is lads walking to work, it's early morning you can see on the left hand side there's a band which is very typical of these big work institutions,".

VOA: standard.2009.12.09