Daniel Frederick Hart is an American musician, composer and classically trained violinist. He has released music as a soloist and with his bands the Physics of Meaning and Dark Rooms. He has also toured and recorded with numerous bands, including St. Vincent, Other Lives, John Vanderslice, Swans, the Rosebuds, Annuals, Glasser, Broken Social Scene, Pattern Is Movement, Mount Moriah, the Polyphonic Spree and Sarah Jaffe. In 2012, he wrote and recorded the score for David Lowery's film Ain't Them Bodies Saints, which premiered at Sundance Film Festival in 2013. He wrote the scores for Pete's Dragon (2016), A Ghost Story (2017) and The Green Knight (2021). He lives in Los Angeles.