To launch YouTube Music, we partnered with the biggest band in the world, Coldplay. Now, I feel it's incumbent upon me to share that I am not a Coldplay fan. Actually, it's not incumbent upon me at all, I just want to make sure you know I'm not a Coldplay fan. But they signed on for this project and for two months, I worked with musicians from around the world to develop an interactive experience for their song "Paradise." Selecting from over 200 musicians, you could compose your own version of the song in real time, even record yourself and join the band. Check out the demo below to see how it all came together. Then watch the music video we cut together to promote the campaign. Then nerd out on the mobile experience we built with WebSockets so you and your friends could sync devices and create a mobile band. Also, I'm not a Coldplay fan.