Guy Sebastian seems like he's always been sitting at a piano. When he's on stage, accompanying his soulful singing from behind a shining grand, it seems so natural. But the Sydney-based musician and TV personality only came to the instrument as an adult. "Taking up piano was actually a bit of a mistake," he laughs. "I was sort of forced into it, because I was broke at uni, working at a warehouse as a forklift driver, and I needed more money." Sebastian picked up a gig teaching singing at a school, but quickly realised he would be required to accompany...