The Singing Revolution is a commonly used name for events between 1987 and 1991 that led to the restoration of the independence of Estonia, Latvia and Lithuania. The term was coined by an Estonian activist and artist, Heinz Valk, in an article published a week after the 10–11 June 1988, spontaneous mass night-singing demonstrations at the Tallinn Song Festival Grounds.
After World War II, the Baltic states had been fully incorporated into the USSR after military occupation and annexation first in 1940 and then again in 1944. Mikhail Gorbachev introduced "glasnost" (openness) and "perestroika" (restructuring) in 1985, hoping to stimulate the failing Soviet economy and encourage productivity, particularly in the areas of consumer goods, the liberalisation of cooperative businesses and the service economy. Glasnost rescinded limitations on political freedoms in the Soviet Union which led to problems within the non-Russian nations occupied in the build-up to war in the 1940s.
Hitherto unrecognised issues previously kept secret by the Moscow government were admitted to in public, causing dissatisfaction within the Baltic states. Combined with the war in Afghanistan and the nuclear fallout in Chernobyl, grievances were aired in a publicly explosive and politically decisive manner. Estonians were concerned about the demographic threat to their national identity posed by the influx of individuals from foreign ethnic groups to work on such large Soviet development projects as phosphate mining.