"Sunshine" was written by Kara DioGuardi, Lukas Burton, Zukhan Bey, Norman Johnson, Gregory Perry, Ricki-Lee Coulter and Jarrad Rogers.

[1] In an interview with The Age, Coulter said "Sunshine" is a "happy and in love song" with a motown feel.

[2] "Sunshine" contains elements of the 1971 song "Want Ads" by American R&B girl group Honey Cone.

[4] "Sunshine" was certified gold by the Australian Recording Industry Association for shipments of 35,000 copies.

[5] The music video for "Sunshine" was directed by Bart Borghesi and filmed in Melbourne.