What is let it die foo fighters?

"Let It Die" is a song by American rock band Foo Fighters, released as the third single from their fourth studio album "Echoes, Silence, Patience & Grace" in 2008. The song was written by lead vocalist and guitarist Dave Grohl and features prominent use of his signature Gibson DG-335 electric guitar. The lyrics of the song touch on themes of loss, regret and acceptance. The music video for "Let It Die" was directed by Samuel Bayer and features the band performing in a post-apocalyptic wasteland. The song received critical acclaim and was a commercial success, reaching the top 20 in several countries.