Cannot understand a thing they are singing?
And how it all fits into the bigger picture of musical theatre and beyond? 
Well, help for music lovers and festival organisers is happily provided. The sidetitles follow the logic of musical phrase therefore communicating the performed texts in real life. Also the stylistical and artistic vision of director can be supported, so there are cases of different productions using  a bit different translations  of the same text...
The next order in line, work in process:

Estonian - native language

English -  fluent in speech and writing

Russian - fluent in speech and writing
Finnish -  fluent in speech

Original translations commissioned for the performances of Latvian NO, Ukrainian NO, Opera North (UK), Helikon Opera (Moscow), Wroclaw Opera (Poland), Teatro Di Milano (Italy), Komische Opera Berlin and Krefeld - Mönchengladbach Theatre (Germany), Belarus State Opera, Ankara State Opera (Turkey),  St.Petersbourg Chamber Opera, Thbilisi State Opera, The Biel and Solothurn City Theatre (Switzerland), Kaunas State Music Theatre (Lithuania)  in Estonia, 
and original music theatre productions of Saaremaa Opera Festival, Tallinn Birgitta Festival and PromFest.

Aho. "Frida y Diego"
Bellini. "Norma"

Bernstein. Mass
Bizet. "Carmen"
Bizet. "The Pearl Fishers"
Britten. "Albert Herring"
Borodin. "Kniaz Igor"
Donizetti. "Lucia di Lammermoor"
Dvorak. "Rusalka"
Gounod. "Faust"

Lysenko. "Natalka from Poltava"
Mozart. "Die Entführung aus dem Serail"
Mozart. "Don Giovanni"
Orff. "Trionfo di Aphrodite"
Orff. "Carmina Burana"
Mascagni. "Cavalleria Rusticana"
Mussorgsky. "Boris Godunov"
Puccini. "Gianni Schicchi"    
Puccini. "Il Tabarro"
Puccini. "Madama Butterfly"
Reise. "Rasputin"
Rimsky-Korsakov. "Christmas Eve"
Rimsky-Korsakov. "Tsar´s Bride"                 Rossini. "Il barbiere di Siviglia"
Rossini. "Il turco in Italia" 
Shostakovich. "The Nose"
Szymanovski. "Krol Roger" 
Verdi. "Attila"
Verdi. "Don Carlos"
Verdi. "The Masked Ball"
Verdi. "La Traviata"
Verdi. "Otello"
Verdi. "Rigoletto"​
Wagner. "Lohengrin"
Weill. "Die sieben Todsünden"