Release Dates
| Italy | 31 August 2003 | (Venice Film Festival) |
| Canada | 7 September 2003 | (Toronto International Film Festival) |
| Canada | 21 September 2003 | (Cinefest Sudbury International Film Festival) |
| UK | 25 October 2003 | (London Film Festival) |
| Norway | 25 November 2003 | (Oslo International Film Festival) |
| Greece | 27 November 2003 | (Thessaloniki International Film Festival) |
| Netherlands | 23 January 2004 | (International Film Festival Rotterdam) |
| USA | 14 February 2004 | (Portland International Film Festival) |
| Serbia | 1 March 2004 | (Belgrade Film Festival) |
| Denmark | 1 April 2004 | (NatFilm Festival) |
| USA | 10 April 2004 | (Philadelphia International Film Festival) |
| USA | 30 April 2004 | (New York City, New York) |
| USA | 2 May 2004 | (Independent Film Festival of Boston) |
| UK | 4 May 2004 | (Commonwealth Film Festival) |
| France | 7 July 2004 | (Rencontres Internationales de Cinéma à Paris) |
| Czech Republic | 8 July 2004 | (Karlovy Vary International Film Festival) |
| New Zealand | 9 July 2004 | (Auckland International Film Festival) |
| Finland | 17 September 2004 | (Helsinki International Film Festival) |
| Iceland | 19 November 2004 | (Reykjavik International Film Festival) |
| France | 18 March 2005 | (Alès Film Festival) |
| Portugal | 12 May 2005 | |
| Finland | 15 June 2005 | (Midnight Sun Film Festival) |
| France | 16 June 2005 | (Cabourg Film Festival) |
| France | 7 July 2005 | (La Rochelle Film Festival) |
| Greece | 1 September 2005 | |
| Bulgaria | 4 November 2005 | (Cinemania Film Festival) |
| France | 20 November 2005 | (Arras Film Festival) |
| France | 27 January 2006 | (Gerardmer Film Festival) |
| France | 22 February 2006 | |
| Hong Kong | 12 March 2006 | (Canadian Film Festival) |
| Argentina | 29 November 2006 | (video premiere) |
| Germany | 7 December 2006 | |
| Italy | 11 July 2008 |
Also Known As (AKA)
| Argentina | La canción más triste del mundo |
| Brazil | A Música Mais Triste do Mundo |
| Greece (festival title) | I pio lypiteri mousiki ston kosmo |
| Greece (transliterated ISO-LATIN-1 title) | I pio lypiteri mousiki tou kosmou |
| Italy | La canzone più triste del mondo |
| Poland | Najsmutniejsza muzyka swiata |
| Portugal | A Canção Mais Triste do Mundo |
| Serbia | Najtužnija muzika na svetu |
| Russia | Самая грустная музыка в мире |
