Question: What banned formed in Olympia, Washington headlined the Decibelle music and cultural festival?
Sentence (from "Estrojam's Decibelle Music and Culture Festival"): Past headliners have included, Wanda Jackson (First Lady of Rock who toured with Elvis in the 1950s and 1960s), Nina Hagen, Concrete Blonde, Cat Power, The Gossip, Peaches, Amy Ray of the Indigo Girls and Margaret Cho.
Relevant evidence: Yes