So let me get this right, people would just break out in song just like they do in musicals? (Sorry, just joking.) Seriously, this is quite interesting. Maybe we need a little group entertaining in our lives and less social distancing.
There used to be a place in Center City (or as we said growing up near Philly, senner siddy) called the Borgia Cafe where you could catch unsigned jazz acts and singers. Those opportunities still exist - see my rant in this thread. We just gotta get up and DO IT.