Portlandia's already been good for unexpected cameos (Aimee Mann, Steve Buscemi, Aubrey Plaza, plus many others). And it looks lik Portlandia is upping the number of musical cameos. Next week Colin Meloy, James Mercer, and Corin Tucker will guest star as fictional band Echo Echo (sorry guys). Check out a clip of the sketch below. Remember, Corin Tucker is Portlandia ...