Description:

About a Ukrainian girl made captive by Tatar invasions, a heroine sold to a Turkish harem, who freed 711 Cossack countrymen that were held captive for 30 years after a sea-raid gone wrong, but paid for it with her own death.

Many thanks to Vitaliy for the transcription & research!
The animation is based on "Дума про Марусю Богуславку": Duma (Ballad) about Maria Bohuslavka (Maria from Bohuslav).

The animation uses several works/songs:
1/ "Зажурилась Україна"
2/ A piece by Mykhailo Hrushevskiy, an important Ukrainian author
3/ the Maroussia Bohuslavka Operette in 4 parts, Kiev 1913
4/ the folk song "Плач невольника"
5/ the poem "Дума про Марусю Богуславку"

The first video above has by far the best image quality and is in the original 24fps theatrical frame rate. However, the sound seems a bit odd (it warbles) - perhaps it was slowed down from the 25fps soundtrack rather than recorded separately.