Experiment 6962: Dial-A-Song

picked 6962 since that's the last four digits of TMBG's [Dial-A-Song](https://tmbw.net/wiki/Dial-A-Song) and this is inspired by that new songs should be relatively easy to add later by modifying the songs array: ```diff songs = [ Song('Never Gonna Give You Up', 'Rick Astley', 'https://www.youtube.com/watch?v=dQw4w9WgXcQ'), Song('Istanbul (Not Constantinople)', 'They Might Be Giants', 'https://www.youtube.com/watch?v=p6NzVd3pGdE'), Song('Don\'t Forget', 'Laura Shigihara', 'https://www.youtube.com/watch?v=PEPbUhHhECU'), + Song('All Star', 'Smash Mouth', 'https://www.youtube.com/watch?v=-_RBJvfoszk') ] ``` made a couple more small changes too that helped me while debugging, let me know if I should break those up into separate PRs or if this is fine