<Li> Various (2002--present) </Li> <Li> Sharon Miller (2005--2012; script editor / head writer) </Li> <Li> Andrew Brenner (1991--92, 1998, 2013--present; head writer) </Li> <Tr> <Th> Directed by </Th> <Td> <Ul> <Li> David Mitton (1984--2003) </Li> <Li> Steve Asquith (2002, 2004--2008) </Li> <Li> Greg Tiernan (2008--2012) </Li> <Li> David Baas (2013--2014) </Li> <Li> David Stoten (2014--present) </Li> <Li> Rob Silvestri (feature length specials 2013--14) </Li> <Li> Don Spencer (2014--2015) </Li> <Li> Dianna Basso (2015--present) </Li> </Ul> </Td> </Tr>

Who wrote thomas the tank engine theme tune