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 U.S. Billboard Hot 100 and number one on the UK Singles Chart, while its reissue features the U.S. top 20 single "I Know What You Did Last Summer". .