Overview

• Shawn Mendes and Coldplay performed 'Fix You' together at Munich's Olympiastadion.
• Mendes' appearance was unexpected, adding excitement to Coldplay's three-night run in the city.
• Coldplay's new album, 'Moon Music,' is set for release on October 4, featuring various collaborations.
• Shawn Mendes will release his fifth album, 'Shawn,' on October 18, following recent singles.
• Both artists have shared updates and teasers for their upcoming projects on social media.