Bomb in a Birdcage is the second studio album by A Fine Frenzy, the stage name of American singer-songwriter Alison Sudol. The album was released on August 28, 2009 in Germany and on September 8, 2009 in the United States. "Bomb in a Birdcage" debuted at #28 on the U.S. Billboard 100, a career high for Sudol. The album's singles were digitally released via iTunes: "Blow Away" in July 2009, followed by "Happier" and "Electric Twist" in 2010. Two bonus tracks were also included with exclusive editions of the album on iTunes and Amazon MP3 respectively: "Coming Around" and "Silent War". The album's title is taken from the end of the LP's first song, "What I Wouldn't Do", where Sudol sings: "It was now and we were both in the same place / Didn't know how to say the words / With my heart ticking like a bomb in a birdcage / I left before someone got hurt." In an iTunes podcast about "The World Without", Sudol revealed that she felt "Bomb in a Birdcage" is about "two totally messed up people trying to stay afloat despite all the odds."
With a few exceptions, Bomb in a Birdcage received generally positive reviews, with most reviewers praising Sudol's songwriting but divided on Sudol's success at broadening musical her horizons beyond One Cell in the Sea. Kerri Mason of Billboard gave the album a favorable review. Mason was impressed with Sudol's musical growth, noting that she "builds on the more ethereal qualities" of One Cell in the Sea, concluding that "Bomb in a Birdcage" "shows there's much more up [Sudol's] billowy sleeve." Andrew Leahey of AllMusic gave the album four of five stars, calling it "a lively piece of work" and concluded that "Bomb in a Birdcage" is "a fitting display of the explosives this songbird now has in her arsenal." Mackenzie Wilson of Bust magazine noted that "simple pop moments such as "What I Wouldn't Do" and "Happier" showcase [Sudol's] songwriting chops as well as her artistic confidence." Matthew Tsai of Decoy Music was less impressed with the album, awarding it three stars, but noted that "overall, the album sheds a joyful radiance" and conceded: "it may be intricate, but it is undoubtedly not forgettable."[unreliable source?] James Shotwell of Under the Gun Review called the album "beautiful and moving" and praised Sudol's ability to "[walk] the fine line between simplistic and lush." On mxdwn.com, Charlee Redman called "Bomb in a Birdcage" "pretty pop with an edge," and "a pleasant listen, and maybe a sign of new directions to come."[unreliable source?]