I didn’t mean to imply that Keith bought a song with your account. I just wondered why the $1 discrepancy and thought it would be truly amusing (in a sick way) if this had ended up costing Keith/you $1 after all. 😉
In fact, on further reflection and after parsing through in my head how this worked, I suspected that the $1 is a open-to-buy authorization charge against your card to validate it, and that held amount should release after 7-10 days, tops.
In other words, the money is there, but Apple has signaled (to validate the card) that they might want it, so it’s being held until they say yes or the time runs out.