So that was my crash course, just quickly learning by ear."Twenty-three years since winning the inaugural season of Australian Idol, Sebastian still hasn't had any piano lessons, but he says almost every song he writes starts there."The piano is like an orchestra in a box, and I can map out all the chords and the voicings and the hooks," he explains."If I've got an idea in my head, it stays as a voice note until I get on the piano."In a slim window between appearing on the latest season of ABC TV's The Piano and his upcoming national tour, we caught up with Sebastian to find out some more fun facts — from what he's been watching, to his pre-performance rituals.I'm definitely a night owl You've had that introduction; it's up to you to get down to business.Heaps of stuff! When you look at the show itself — random people getting up in a public space and jamming out on piano and then telling us a bit about their life — for me, it's a hard sell.But here is a show that is so different to a "shiny-floor" show