After the end of the first World War, women's suffrage was at its peak with the ratification of the Nineteenth Amendment in 1920. Taking a greater part in the workforce, women started to make a big statement within society and gained more independence and freedom of expression and sexuality. Up until the 1920s, women singing Jazz music was not common but women playing Jazz instruments was even less common. Mary Lou Williams, known for the talent of playing the piano is credited as one of the mothers of jazz due to the contributions of the new tones she provided by singing while playing the piano. Many musicians began taking the discussion of inequality from the musical world and applying those same concepts in becoming activists in the political world. Several women in jazz were activists either for gender equality or racial equality... and often times both. Today, women hold a prominent role in the world of Jazz and continue to write, perform and sing songs that have become staples in everyday life and are pushing the Jazz genre even further into greatness.