Rosana Štemanetian in 2008 graduated from the piano class at the Juoz Karos Music School in Klaipėda. in 2011 graduated from Klaipėda Stasios Šimkaus Conservatory, where he majored in solo singing. He completed bachelor's (2015) and master's (2017) studies in solo singing at Klaipėda University Faculty of Arts (now LMTA Klaipėda Faculty). in 2017 improved his knowledge at Birštonas summer arts academy, 2018. participated in the chamber singing masterclass program led by Sibylla Rubens.
in 2014 the competition of the international forum "Music Performance and Pedagogy" and the 2015 2nd place laureate of the 2nd international Mykolas Kleopas Oginskis competition "Kūrybos perlai". First place winner of the 9th International Soloist Competition "Young Maestros 2017" and the 11th International S.I. Savshinsky Young Performers Competition (2020).
From 2019 - Soloist of the Klaipėda State Musical Theater. In this theater, he created a dozen roles in operas, operettas and musicals, the most important of which are: Livyetta (in G. B. Pergolesi's opera "Livetti and Tracol"), Rozina (in G. Rossini's opera "The Barber of Seville"), Gianetta (in G. Donizetti's opera "Elixir of Love") , Nomeda (G. Kuprevičius in the opera "The Prussians"), Cerlina (in the opera "Don Juan" by W. A. Mozart), Serpina (in the opera "The Maid" by G. B. Pergolesi), Hodelė (in the musical "Fiddler on the Roof" by J. Bock), Cupidon (J. in Offenbach's operetta "Orpheus in Hell"), Star (in A. Kučinsk's children's opera "Star Opera"), Chip with paprika (in A. Kučinsk's children's opera "Potato Tale"), Sister Marija Leonarda (in D. Goggin's musical "Šounuolynas"), The first fairy (in A. Dvořák's opera "Mermaid"). Participates in KVMT's theatrical concert programs "Spanish Sarzuela", "Strauss Music Whirlwind", "Operetta Festival", "Summer Reflections", "I am an old sailor", "Vivat coffee!".
As a soloist, she performed with the choirs "Polifonija", "Aukuras", "Virgo", "Dangė", "Dagilėlis", "Gintarėlis", "Ažuoliukas". Her concert repertoire includes soprano parts in W. A. Mozart's "Coronation Mass" and "Missa brevis" in F major, A. Vivaldi's "Magnificat", G. B. Pergolesi's "Stabat Mater", C. Saint-Saëns' "Christmas Oratorio", etc. in large vocal-instrumental works of various eras.
