"Mirrors" is a song recorded by American singer and songwriter Justin Timberlake for his third studio album, The 20/20 Experience (2013). First conceived in 2009, the track was inspired by the marriage of his grandparents. It is an eight-minute-long mid-tempo progressive pop and R&B ballad. Timberlake wrote and produced the song with Timothy "Timbaland" Mosley and Jerome "J-Roc" Harmon, with additional writing from James Fauntleroy. The accompanying music video, directed by Floria Sigismondi, was released in March 2013 and depicts a tale of two lovers through several decades.

"Mirrors" was issued as the second single from The 20/20 Experience in February 2013. It went on to top the Australian Urban, Bulgarian, European, Lebanese, Polish, South African and United Kingdom singles charts, being Timberlake's fourth number-one single in the latter. It peaked at number two on the Billboard Hot 100 and topped the Mainstream Top 40 in the United States. "Mirrors" was ranked at number six on the Year-End Hot 100 chart. The song was met with positive reviews by critics upon release and received a Grammy Award nomination for Best Pop Solo Performance. Its music video won two MTV Video Music Awards including Video of the Year. As of 2014, the song has sold over 3 million digital copies in the US.

The singer performed "Mirrors" on television shows as Saturday Night Live and the 2013 MTV Video Music Awards as part of a medley number. It was included on Legends of the Summer Tour and The 20/20 Experience World Tour setlists. The American Society of Composers, Authors and Publishers (ASCAP) recognized it as one of the most performed songs of 2014 and 2015.

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