You know those Band Aid-style groups of musicians who perform together to raise awareness for some sort of charity? Well, here’s another one…this time in the name of Halloween! This all-star smorgasbord of artists consists of Arcade Fire! Karen O! Rilo Kiley! Wolf Parade! Beck! Feist! David Cross! Nardwuar the Human Serviette!. Oh, and a few weird looking sock puppets.