Heinz Valk is not known as a film actor but is a renowned Estonian artist, politician, and activist. He played a significant role in Estonia's independence movement during the late 1980s. Valk is credited with coining the phrase "Singing Revolution," which described the series of peaceful mass demonstrations in Estonia and other Baltic states that led to their independence from the Soviet Union. His contributions to art and politics have made him a notable figure in Estonia's modern history.