I want to visit Zurich and Northern Switzerland for five to seven days this September...I am a big Ed Sheeran fan, and he is playing in Zurich on the 16th and 17th, so any itinerary must include one of those days.  I am open for all kinds of day trips, including by train or by tour group.  I have visited much of Europe already, but have never made it to Switzerland, and September seems like a perfect time