On musical encounters

Movement and music go so well together. Unless you have a coach or a game or a story or a competition or a tryout to push you forward, music seems essential to getting in a good workout. So, of course, music is going to be a set and piece. Silent discos. Loud discos. Not sure, Honestly, I haven't gamed this one out, other than this one steep as hell slice of trail in the park where I'll listen to this song and sprint up. 

Otherwise, getting a system for quickly sharing songs seems a bit more awkward to set up than I had first anticipated. I once went to a late night silent disco in the park, and they had these headsets that they gave out to participants. Doing it cheap and on the fly takes a bit more, especially if I want the players themselves able to choose the rules