I decided to scratch my own itch as I like to play music via YouTube with friends when we're together and usually this involves switching between two open tabs on YouTube. It was also a nice project to warm up again after a long sabbatical and to try some things I've never played with before (Front-end programming, Responsive design, Hosting static site via AWS).<p>I've got some ideas on how to improve it if there is interest (to be honest it scratches my own itch so well I'll probably make the improvements anyway :) ).