What caused the Singing Revolution?
The Estonians wanted independence as a country which resulted in them raising the banned Estonian flag by the soviets while gathering en masse and singing banned patriotic songs, the movement eventually gained support of the republic’s ruling Communist Party in defying Moscow and were faced down Soviet tanks and after successfully declared Estonian independence.
How successful was the struggle?
It wasn't that successful because it was a non violent singing since its successful independence struggle estonia has maintained a parliamentary democracy, primarily under the leadership of center-right parties. In 2004 the country joined NATO and became a full member state of the European Union. Initial restrictions on linguistic rights of the ethnic Russian minority were relaxed in 2001, though some tensions between the two communities and with Russia itself remain.