The Sound of My Voice is a musical biography of one of the most successful and versatile female singers of the 20th century -- and one of the most successful recording artists of all time. At the height of unprecedented success, Ronstadt, a restless and adventurous artist, turned away from pop music to explore an astonishing variety of musical styles, from American standards to country to classical operetta before circling back to her family roots with traditional Mexican canciones. Withstanding constant pressure from a risk-averse industry, Linda insisted on following her musical instincts.