Let's discuss City on Fire by Garth Risk Hallberg

This will be our long book that covers December/January - we will be discussing it in January. Each year we read an 800+ page book during December/January. This is that book this time.
Goodreads says:
New York City, 1976. Meet Regan and William Hamilton-Sweeney, estranged heirs to one of the city's great fortunes; Keith and Mercer, the men who, for better or worse, love them; Charlie and Samantha, two suburban teenagers seduced by downtown's punk scene; an obsessive magazine reporter, Richard, and his idealistic neighbor, Jenny, - and the detective trying to figure out what any of them have to do with a shooting in Central Park on New Year's Eve.

The mystery, as it reverberates through families, friendships, and the corridors of power, will open up even the loneliest-seeming corners of the crowded city. And when the blackout of July 13, 1977, plunges this world into darkness, each of these lives with be changed forever.

City on Fire is an unforgettable novel about love and betrayal and forgiveness, about art and truth and rock 'n' roll, about what people need from each other in order to live... and about what makes the living worth doing in the first place.