"Pray" is a song performed by Canadian recording artist Justin Bieber. The song was written by Bieber along with Omar Martinez and Adam Messinger and Nasri of The Messengers, with the latter duo producing the track. The song is taken as a single in several European countries from his first compilation album, My Worlds: The Collection. In the United States and Canada, the song is included on My Worlds Acoustic. According to Bieber, he was inspired by Michael Jackson's "Man in the Mirror" (1988) when writing the song. The song is a contemporary Christian song, while deriving from pop and R&B influences, and using a world music backdrop. It primarily features acoustic instruments, however does make small usages of electronic sounds.

"Pray" received generally positive reviews, with critics appreciating the message portrayed in the song. It reached the lower half on the singles charts in Germany and Austria, and charted in several regions where it was not released as a single such as the United States and Australia. The song's music video premiered on Facebook on December 11, 2010. The video, which also has religious undertones, features clips of places affected by natural disasters, sick children, possessed homes, and more, which are intercut with Bieber performing. Bieber debuted and performed the song on the American Music Awards, accompanied by a full choir.

"Pray" was written by Omar Martinez and Adam Messinger and Nasri Atweh of The Messengers. While Bieber was being interviewed by Ryan Seacrest on his radio show, Bieber talked about the songs initial writing stating the song was influenced by Michael Jackson, Bieber elaborated, "It's a very uplifting song, very motivational. It definitely comes from the heart. It's very beautiful. I definitely thought of Michael [Jackson's] 'Man in the Mirror' when I was writing it." The song was released as a CD single in Germany on December 3, 2010. "Pray" is a mid-tempo song that uses a "world-music beat" as a backing. According to the sheet music published at Musicnotes.com by Universal Music Group, "Pray" is set in common time with a tempo of 80 beats per minute. It is composed in the key of B major with Bieber's vocal range spanning from the low-note of F♯₃ to the high-note of B₄. The song follows in the chord progression of B/G♯–B/F♯–E–B.

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