She grew up as a member of The Neilsons, performing with her parents and two brothers across North America, and continues to co-write much of her work with brother Joshua "Jay" Neilson, who shared her Silver Scroll win as well as producing her first three albums: Red Dirt Angel (2008), The Kitchen Table Sessions, Vol.

[6] In 2017, Neilson also appeared as a subject of the documentary Prime Rocks: The New Sound of Country in New Zealand, alongside Marlon Williams, Delaney Davidson, and Barry Saunders from The Warratahs.

[8] Neilson's 2022 album, Kingmaker included the single "Beyond the Stars", a duet with country music legend Willie Nelson, which was released to considerable acclaim after being debuted on stage in a live performance with him, at his Luck Reunion concert in March that year.

[9] The album went on to debut at #1 on the New Zealand charts in July, which was followed by a sold-out concert with the Auckland Philharmonia Orchestra at the Aotea Centre,[10] and a national tour with Chamber Music New Zealand, during which she performed "Beyond The Stars" with Bret McKenzie in Wellington.

[12] In 2022, Neilson herself appeared on The Brokenwood Mysteries performing "Ten Tonne Truck" on the episode "Good as Gold".