David Immanuel Menachem Sasagi Le’aupepe[1] is an Australian singer, songwriter, guitarist and frontman of alternative rock band Gang of Youths, which he founded in 2011.

He served as the sole songwriter on the band's first two albums, The Positions (2015) and Go Farther in Lightness (2017), finding lyrical inspiration from personal hardships including loss.

Following the death of his father in 2018, the band's most recent album, Angel in Realtime (2022), is a reflection on Le'aupepe's grieving process and family identity.

[4] In his youth, he was heavily influenced by rock artists including Bruce Springsteen, and recalled that watching a live recording of "Born to Run" made him intent on pursuing music as a career: "that was when I knew I needed to do this for real".

[2][5] Le'aupepe states that he was "raised on classical music", and that in the production of Gang of Youths' second studio album Go Farther in Lightness (2017), it "felt very natural to employ devices that would have normally been used by, say, Vivaldi or Bach".