Kristian Merrill Bush is an American singer, songwriter, and record producer. Bush is one half of the country music duo Sugarland with Jennifer Nettles, and was a member of the folk rock duo Billy Pilgrim with Andrew Hyra. In addition to his work in these two groups, Bush released one solo album, Southern Gravity, via Streamsound Records in 2015, and four solo albums via Big Machine Records, 52 ATL x BNA, 52 | In The Key Of Summer, 52 | New Blue, and 52 | This Year in 2022 and 2023. In 2023 Bush also released an EP titled Drink Happy Thoughts on his own label Songs Of The Architect.

Sugarland is an American country music duo founded in Atlanta, Georgia. The duo consists of singer-songwriters Jennifer Nettles and Kristian Bush. They were founded in 2002, at which point Kristen Hall was also a member. All three had experience in folk rock: Nettles had recorded in the groups Soul Miner's Daughter and Jennifer Nettles Band, Bush had recorded two albums as one-half of the duo Billy Pilgrim, and Hall had recorded two solo albums. After Hall left in 2006, Nettles and Bush continued as a duo.