“You’ll Think of Someone” is sung by the two main characters in Act 1 of the 1968 Broadway musical Promises, Promises, based on the classic 1960 film The Apartment. Featuring a score by Burt Bacharach and Hal David, the show is notable for introducing the pop idiom to Broadway, and was among the first shows to use amplified instruments in the pit.
Performed here by Kristin Chenowith and Sean Hayes, who starred in a 2010 Broadway revival, the song moves fluidly between time signatures and alternates between E major and Db major throughout. Bacharach, a 6-time Grammy winner known for his unconventional chord progressions, died yesterday at age 94. In 2012, Bacharach and David were awarded the Library of Congress Gershwin prize for Popular Song, the first time the award had been presented to a duo.