Greg Sheehan is one of Australia's premier and most innovative percussionists widely regarded internationally as a leader in his field. As a performer, he is significantly represented in the last three decades of Australian contemporary music as both a live band member and studio musician on hundreds of recordings. Greg has created a melody from the first 8 numbers in the Fibonacci sequence and performs it in the Concert Hall of the Sydney Opera House for TEDxSydney 2013. In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)