The film, originally titled
Plan B, was written by Kate Angelo and produced by Todd Black, Jason Blumenthal and Steve Tisch. Lopez's casting was announced in December 2008 by multiple sources.
Digital Spy announced in February 2009 that
Alan Poul was in "final talks" to direct
Plan B, which would be his first feature film. On April 8, 2009,
The Arizona Republic reported that O'Loughlin was "in negotiations to nab the romantic male lead".
The Back-up Plan was Lopez's first film in three years, and she confessed to feeling "really nervous". Filming began on May 11, 2009, in Los Angeles.
Music The soundtrack and the score were released on March 26, 2010, on
iTunes. They were made available on
Amazon.com on April 13, 2010. The soundtrack has various artists, while the score was composed entirely by
Stephen Trask.
Soundtrack Score The
film's score was composed by
Stephen Trask. • Daydream – 2:25 • The Back Up Plan – 1:05 • Now What? – 1:04 • That Guy – 0:43 • Show Me Your Cheese – 0:24 • Goodbye for Now – 0:22 • Another Penny Drops – 1:28 • Pregnancy Test – 1:31 • Community Garden – 1:40 • A Serious Question – 0:43 • Fire – 0:40 • First Kiss – 1:01 • Test Results – 0:13 • Shadybrook – 0:38 • Mirror, Mirror – 1:02 • Yummy, Yummy – 1:05 • Cheese Muse – 1:15 • Orgasm – 1:01 • Telling the Truth – 1:46 • Not Leaving Leaving – 0:33 • Dejected – 0:24 • Here We Go – 0:35 • Studies – 0:19 • Chicken In Your Hair – 0:39 • Pancake Prelude – 0:28 • Are You Still In There? – 2:56 • Wall of Strollers / Examination – 1:48 • Pictures of Mom – 1:32 • Just Go – 2:40 • I Wanted a Baby – 1:03 • Old Dogs-New Tricks – 0:43 • Baby Time – 0:43 • And Now, for the Exciting Conclusion Of – 4:49 • Proposal – 1:13 ==Release==