Last night, the Garfield High Jazz Band played its annual “Farewell to Seniors” concert. My son Emmett is among the 20 musicians who are graduating from high school (tomorrow night-yikes) and leaving this amazing program. As I sat in the Quincy Jones Performing Arts Center, I was flooded with an odd mix of melancholy, pride and satisfaction. It almost feels like waking up from a beautiful dream. As I write this today, I seem to…