Growing "Strains"

When my brother returned from his school trip last Friday (13 Mar 09), he sounded like Rod Stewart. Everyone thought he had a sore throat. It turned out it was just him reaching puberty; he's turning 12 next month. Too bad it's only temporary and that every boy goes through it at some stage. In a few months, he'll probably end up with a deep resonant voice like Dad's. No more superstar singer...