"Should've Been Us" is a song recorded by American singer and songwriter Tori Kelly for her debut studio album Unbreakable Smile (2015). Written by Kelly with Ludvig Söderberg, Jakob Jerlström, Oscar Holter, Laleh Pourkarim, Alexander Kronlund and James Alan, and produced by The Struts and Holter, the song was sent to US mainstream radio as the second single from the album on June 2, 2015. A remix of the song featuring American singer Jeremih was released digitally in the United Kingdom on September 10, 2015, as Kelly's first single there.

"Should've Been Us" is a pop song with influences of urban music. Lyrically, the song talks about an unrequited relationship, where she laments the failed romance and what it could have been like with her former lover. The song received generally favorable reviews from music critics, who commended it for being infectious and relatable. The song peaked at number 51 on the Billboard Hot 100, becoming Kelly's highest charting single to date in the United States. While promoting the song on a variety of television programs, as well as award shows, Kelly received highly praise from critics, who positively highlighted her vocal performance, mostly notable the 2015 MTV Video Music Awards.

"Should've Been Us" was released when pre-order of her debut album Unbreakable Smile became available on May 11, 2015. The official audio was uploaded on VEVO on the same day. The lyric video for the song was also uploaded to YouTube and Vevo on May 25, 2015. It was officially sent to mainstream radio in the United States on June 2, 2015 as the second single from the album. For the British market, a remix of the song was commissioned, featuring American recording artist Jeremih. It was released digitally on September 10, 2015 as the singer's debut single in the United Kingdom.

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