"Good Night" is the debut single by British-Australian recording artist Reece Mastin, who won the third series of The X Factor (Australia) in 2011. It was released digitally on 22 November 2011, shortly after the show ended, as the lead single from his self-titled debut album. The song was written by Hayley Warner with Anthony Egizii and David Musumeci of the songwriting and production duo DNA Songs. "Good Night" received mixed to positive reviews from music critics, most of whom noted its similarities to Pink's "Raise Your Glass" (2010). The song debuted at number one on the ARIA Singles Chart, and became the first number-one winner's single for The X Factor (Australia). It was certified five times platinum by the Australian Recording Industry Association (ARIA), denoting sales of 350,000 copies. "Good Night" also peaked at number one in New Zealand and was certified platinum by the Recording Industry Association of New Zealand (RIANZ).

"Good Night" was written by Hayley Warner with Anthony Egizii and David Musumeci of the songwriting and production duo DNA Songs, who also produced the track. On 22 November 2011, "Good Night" was released for digital download and sent to Australian radio, shortly after Mastin won the third series of the The X Factor (Australia). When speaking of the song, Mastin explained: "It's got that old' summery-rock kinda feel to it you know, like classic rock songs like 'Boys Of Summer' (Don Henley). It's just really fun, and songs from [X Factor] winners are usually really big ballads, so it was cool to do something a little bit different."

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