"Lost" is the second single from Michael Bublé's third studio album, Call Me Irresponsible. The song was inspired by the breakup with his former fiancée. A music video accompanied the release of the single, which has Bublé "listening" through the walls of an apartment and hearing the people behind them.
On charts, "Lost" reached #14 in Norway, #19 in the U.K., #25 in Canada, and #97 in the U.S.
Bublé performed the song on The X Factor on December 8, 2007. The song was featured in the 6th season episode of NCIS. "Lost" was nominated for a Juno award for the year 2009, and Jann Arden covered it for her 2009 album Free.
(Digital is in C,
but transposable to B to match video)