Handwritten is the debut studio album by Canadian singer Shawn Mendes, and was released on April 14, 2015 by Island. It debuted at number one on the US Billboard 200 with first-week sales of 119,000 album-equivalent units, of which 106,000 copies were pure album sales. The album includes "Stitches", which reached top 5 on the US Billboard Hot 100 and number one on the UK Singles Chart for 2 weeks, while its reissue features the US top 20 single "I Know What You Did Last Summer".

After signing a record deal with Island Records in June 2014, Mendes released his debut single "Life of the Party" which peaked at number 24 on the US Billboard Hot 100. Following the single release, an EP titled The Shawn Mendes EP was released on July 28, 2014, and sold 48,000 copies in its first week. Mendes announced his debut album title and artwork on January 27, 2015 and it was made available to pre-order on February 2, 2015.

Handwritten was reissued in a revisited edition on November 20, 2015. It includes five live recordings tracks from the Greek Theatre and four brand new songs.

"Life of the Party", was released as the lead single from Mendes debut EP The Shawn Mendes EP on 25 June 2014. The song serves as the first single from Handwritten as well. A one-shot lyric video for the song showing Mendes in the George Street diner premiered on Vevo on June 30, 2014. The official music video for the song premiered on March 10, 2015.

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