How many acts are in the opera based on an 1820 poem by Alexander Pushkinhave, in which Mariya Matveyevna Stepanova created the lead soprano role?
Ruslan and Lyudmila (opera): Ruslan and Lyudmila (Russian: Руслан и Людмила , "Ruslan i Lyudmila") is an opera in five acts (eight tableaux) composed by Mikhail Glinka between 1837 and 1842. Ruslan and Lyudmila (opera):  The opera is based on the 1820 poem of the same name by Alexander Pushkin.
i don't know