[2] The sisters have previously partnered with DJ Friðfinnur "Oculus" Sigurðsson, with whom they formed the house band Sísý Ey in 2011.

[5] Their mother is singer Ellen Kristjánsdóttir [is], and their father is composer and keyboardist Eyþór Gunnarsson [no] of the band Mezzoforte.

[7] Sísý Ey released its debut single "Ain't Got Nobody" in 2013, and partnered with British house label Defected Records for "Do It Good" in 2015 and "Mystified" in 2018.

[11] They performed their entry "Með hækkandi sól" in the first semi-final on 26 February, and advanced to the final on 12 March.

[12] They went on to win the competition, beating Reykjavíkurdætur in the superfinal, and thereby won the right to represent Iceland in the Eurovision Song Contest 2022 in Turin, Italy.