Question: Decibelle, formerly Estrojam, is a 501c3 NFP music and culture festival that promotes equality and was established in 2003, past headliners have included, who, which American singer, songwriter, pianist and guitarist who had success in the mid-1950s and 1960s as one of the first popular female rockabilly singers and a pioneering rock-and-roll artist?
{'answer': 'Wanda Jackson', 'supporting_facts': [["Estrojam's Decibelle Music and Culture Festival", 1], ['Wanda Jackson', 0]]}