This Sunday, Icelandic artist Ragnar Kjartansson will present A Lot of Sorrow, a performative sound piece that will present the band The National, playing its song “Sorrow” for six consecutive hours at MoMA PS1.  Embracing duration and endurance as fundamental to the piece, the work explores the line between pop music and sonic sculpture.  As stated in the press release: “the idea behind A Lot of Sorrow is devoid of irony, yet full of humor and emotion. It constitutes another quest to find the comic in the tragic and vice versa.”