A Night On The Bare Mountain describes a short story in which St John sees a witches' Sabbath on the Bald Mountain near Kiev in the old Russian Empire. It's a wild and terrifying party with lots of dancing but when the church bell chimes 6 am and the sun comes up the witches vanish.
(A Night On The Bare Mountain by Modest Mussorgsky - BBC)
https://www.bbc.co.uk › programmes › articles › a-night-on-the-bare-mount...
Modest Petrovich Mussorgsky (1839-1881)was one of music's great originals. Everything he composed was conceived in terms of natural rhythms, melodies and harmonies of Slavonic folk music.
(classicfm.com › composers › mussorgsky)