At the Holiday Pops Christmas Concert last December we noticed an ad in the program for a Night with The Music of Harry Potter, a concert offering from the Ann Arbor Symphony Orchestra. It sounded good to us so I made a mental note to look into tickets. Thankfully, I forgot to put that task in my journal, because a month or so later we were told that the Boychoir would be performing in said Harry Potter concert, no ticket for the singer necessary. So while Jon and I procured tickets, Calvin procured music and a magical frog (you can't sing in the Hogwarts Frog Choir with one, after all).
The night started with fun in the lobby, which Calvin got to participate in (including his very first selfie as part of the baffling Horcrux search) before ducking backstage for his Frog Choir debut. We were able to keep him away from the prying eyes of the Ministry and out of Azcaban, so I think we did a good job of wizarding.