Marian Hill is an American songwriting duo from Philadelphia consisting of production artist Jeremy Lloyd and vocalist Samantha Gongol. Their name comes from two characters, Marian Paroo and Harold Hill, from the musical The Music Man. Lloyd releases solo music under the name Clear Eyes. He released his debut song "Let Me Know", featuring Drew Love and Lauren Jauregui, on December 4, 2019.
The duo released their debut EP, Play, in 2013, which featured improvisational jazz musician Steve Davit. Two years later, they announced their second EP, Sway. They made their television debut on The Late Late Show with James Corden in September 2015. A track that appears on both EPs, "One Time", entered the top 40 on US alternative radio in December 2015. The duo released four singles throughout 2016, leading up to their debut album Act One.
On January 14, 2017, Apple's AirPods "Stroll" commercial, played during the Atlanta Falcons and Seattle Seahawks playoff game, featured Lil Buck gravity dancing to "Down". In April 2017, the duo released an extended version of their debut album Act One titled Act One (The Complete Collection). This version features all songs from Act One, as well as "Sway", "Back to Me" (featuring Jauregui), and a feature with Detroit rapper Big Sean.