The song "Stitches" by Shawn Mendes is performed and composed by Shawn Mendes himself. It was released on June 16, 2015, as the third single from his debut studio album "Handwritten." The track is in the original key of B minor. "Stitches" has become one of Mendes' most successful songs, reaching the top 10 in various countries and earning him widespread recognition. As for the melody, it features a catchy and upbeat pop sound, characterized by strong guitar rhythms and impactful vocals. It has been described as an anthem of heartbreak and resilience.