In the referenced performance on "The Tonight Show Starring Jimmy Fallon," David Gilmour was promoting his album "Rattle That Lock," which was released in September 2015. This album, Gilmour's fourth solo studio effort, followed his 2006 album, "On An Island." Gilmour's live performance and discussion on the show highlight not only his musical journey but also his innovation in the studio environment, as he notably worked with family members on "Rattle That Lock." The segment also touches on his thoughts regarding the synchronization theory between "The Dark Side of the Moon" and "The Wizard of Oz," a popular cultural reference that illustrates his connection to Pink Floyd's legendary legacy. This period marked a resurgence in Gilmour's solo career, showcasing his ability to evolve as an artist while maintaining ties to his iconic past.