It was written and produced by Kesi Dryden, Leon Rolle, Piers Aggett, Amir Amor and Cass Lowe.

"But when James heard the song he said the message he got from it was there has been a lot of negative times in the past but when the sun comes up it is a new day, you have a new chance.

"[6][7] Robin Murray of Clash magazine described the song as "fusing underground sounds with some of the freshest pop hooks in the land".

"[2] Philippine Daily Inquirer wrote: "'Sun Comes Up' is a touching glimpse into how they've grown, both as individuals and as a band, and the various struggles they have been through to overcome adversity to get where they are today.

"[3] Katrina Rees of CelebMix wrote: "The track opens with a gentle melody before an infectious beat kicks in which complements James' vocals.