The 2023 La Scala production of an opera from this country set its first and third acts in a submerged gothic cathedral and introduces its title character in a wheelchair wearing a pink tentacled dress. A composer from this country used his technique of “speech-melodies” to evoke natural vocal patterns in a character’s plea for (-5[1])forgiveness after drowning her stepdaughter’s baby in an icy stream. In one opera from this country, (10[1])ascending harp chords in 3/8 open the aria “Song to the Moon.” (10[1])In that opera from this country, a prince dies after kissing the title water nymph. (-5[2])Folk dances like (10[1])the furiant and polka feature in an opera from this country, whose other operas include Rusalka (10[1])and (10[1])Jenůfa (“yeh-NOO-fah”). For 10 points, name this country home to operas by composers Leoš Janáček (“YA-na-check”) and Antonín Dvořák ■END■ (10[3])