several episodes or even series, provided sub-plots between main characters, allowing for character and relationship development between them, with additional characters added in over time. In time, Heartbeat saw the cast being changed throughout its broadcast history, as new characters were introduced to replace those who left the show after being written out. Sixties pop music features prominently in episodes, notably from the Beatles and Chuck Berry, forming the backbone of Heartbeats soundtrack, although music from other decades sometimes is played in episodes. Some 1970s records appear anachronistically, such as the Hollies' 1974 song "The Air That I Breathe", Led Zeppelin's "Black Dog" (1971) or Pink Floyd's 1971 instrumental "One of These Days." The series 17 finale "You Never Can Tell" is accompanied by the Flying Pickets' 1983 song "Only You", an episode which featured a guest appearance by the band's lead singer Brian Hibbard. Episodes Special programmes The following is a list of specials made for Heartbeat, most of which were behind-the-scene documentaries. All were later included in DVD boxsets for specific series of the programme: Changing Places (13 June 1999) - A one-off special, starring Nick Berry and Juliette Gruber who reprised their roles as Nick and Joanna Rowan respectively. The episode focused on life for the Rowans after moving to Canada, and Nick's new job as a member of the Royal Canadian Mounted Police. The episode was filmed and released on video in 1998, before its television debut a year later. 10 Years of Heartbeat (14 April 2002): A documentary special to celebrate the programme's tenth anniversary. Past and present members of the cast and crew, along with celebrity guests, recalled their experiences of the show and reviewed their favourite moments from the previous ten years. Heartbeat: Christmas Album (18 December 2005): A special that looked back at the Christmas episodes created for Heartbeat. Heartbeat: Farewell Phil (24 December 2007): A one-off special, commemorating the departure of actor Mark Jordon from the programme, after performing for seventeen series as the character Phil Bellamy. Both the actor and his former colleagues relive moments from the series featuring Jordon's character. Production Cast Filming The series was filmed at various locations around North Yorkshire. These include shots on the moors and frequent mentions of local roads (like the A171.) Exterior scenes of Aidensfield are filmed in the village of Goathland in North Yorkshire, with the village's railway station also appearing