Up is a song by English singer-songwriter Olly Murs from his fourth studio album, Never Been Better (2014). It features American singer and actress Demi Lovato and was released as the album's second single on 4 January 2015. It was written by Wayne Hector, Daniel Davidsen, Maegan Cottone, Peter Wallevik and Mich Hansen and was produced by Davidsen and Hansen. The track also featured on the deluxe version of Demi Lovato's fourth album, DEMI.
Digital spy writer Amy Davidson stated: "Demi Lovato is the chosen one to foot tap her way through folk-driven collaboration 'Up', and Murs has made no bones about their hopes to expand their respective audiences on either side of the Atlantic. However, the predictable lyrics, which roll out unoriginal sentiments about the merits of perseverance, make it a duet that's difficult to get too excited over." 
"Up" debuted at number 120 on the UK Singles Chart for the week of 6 December 2014, and rose into the top 100 at number 94 in its second week. The following week it reached number 43, before reaching its peak of number 4. The song debuted in New Zealand at number 38. The single has so far sold 495,000 copies in the UK and is certified gold. This is Demi Lovato's first gold hit in the UK. In addition, Up has so far reached number 14 on the ARIA Charts; thus becoming Lovato's second Australian top 20 hit. Worldwide, Up has currently sold over 1,000,000 copies.
Murs and Lovato first performed the song live on the final of the eleventh series of The X Factor on 14 December 2014.
The video to "Up" was directed by Ben and Gabe Turner and was uploaded onto Murs's Vevo account on 11 December 2014. The video features Murs and Lovato standing in two rooms separated by a wall. The two begin to wreck the rooms before Murs uses a guitar to break a hole into the wall and he and Lovato begin to remove most of the bricks in the wall and look upon each other.
|New Zealand (Recorded Music NZ)||9|
|Scotland (Official Charts Company)||3|
|South Africa (EMA)||5|
|UK Singles (Official Charts Company)||4|
|US Twitter Top Tracks (Billboard)||8|