Henderson co-wrote the song with Kenan Williams[2] and its producers, Ryan Tedder and Noel Zancanella.

It has also peaked within the top ten of the charts in Australia, Austria, Germany, Hungary, Switzerland, Poland, New Zealand and South Africa.

[4] On 15 December, whilst being interviewed on The Saturday Night Show in Ireland, she revealed that she had signed a record deal with Sony Music.

[6] Regarding her decision to sign with Syco, Henderson said, "The most important thing I was looking for was to be involved creatively, and which label presents me with the best team to bring the best out of me.

[12] Lewis Corner of Digital Spy gave the song a positive review, stating: "The end result, Ella's first single 'Ghost', would make a worthy winner's launch, let alone someone who fell victim to the mid-series shock elimination.

"I keep going to the river to pray/ 'Cos I need something that can wash out the pain," Henderson professes over stomping Americana-folk beats and taut guitar twangs, falling somewhere between the rootsy heart of Adele and the pop sensibility of Leona Lewis.

[13] "Ghost" was commercially successful, entering at number one on the UK Singles Chart on 15 June, selling 132,000 copies in its first week on sale.

[19] This video, directed by Jem Talbot, features a young woman (played by Samara Zwain) exploring an empty house and reminiscing on a relationship.

Henderson made her American television debut on 6 August as she performed "Ghost" on Good Morning America.

The song was covered three times by contestants on her origin show, The X Factor, in series 11—firstly by Only The Young at judges' houses, next by Paul Akister in the first live performance by a contestant in that series, and then by Andrea Faustini, who sang the song with Henderson in the celebrity duets round of the final.