This gave her access to the parts in the ballet of academic heritage such as Le Corsaire (A. Adam), Don Quixote (L. Minkus), Swan Lake, Sleeping Beauty (P. Tchaikovsky), Raymonda (A. Glazunov) and others.

In 2006 Matsak won first place (Gold medal in the senior group) in the Sixth Serge Lifar International Ballet Competition in Kyiv.

Of special interest to the audience and the award panel was the performance called "The Way", (to the music of J. Massenet, ballet master Dmitriy Klyavin).

From 2006 to 2008 Matsak was performing on the stage of the National Academic Bolshoi Opera and Ballet Theatre of Belarus in Minsk, where she had been invited by the artistic director of the theater Valentin Elizariev.

For this event Matsak performed Grand Pas Classique (to the music of Daniel Auber, choreography by V. Gzovskiy) in duet with Mikhail Kaniskin, the soloist of the ballet company of the Berlin State Opera.

[3] In April 2009 the Ukrainian ballerina performed on the stage of Mikhailovsky Theater in St. Petersburg, where she played the part of Medora in the version of Le Corsaire (A. Adam) revised by Farukh Ruzimatov.

The parts performed by her at the festival were Odette-Odile from Swan Lake, Medora from Le Corsaire, the Queen of the Dryads from Don Quixote, Gamzatti and Nikiya from La Bayadère, the Lilac Fairy from Sleeping Beauty.

At the same time the ballerina constantly toured with the ballet companies of the National Opera House of Ukraine and other international theaters, performing on stages in Italy, Spain, Portugal, United States, Canada, Mexico, Japan, and Korea.

In winter 2014 Matsak took part in the project "Irina Kolesnikova invites...", held in the Palais des congrès de Paris, where she performed as Nikiya in "La Bayadere" and Odile-Odette in "Swan Lake" with Vadim Muntagirov, principal dancer with the Royal Ballet in London.

In 2012 both artists received the exclusive right to perform a choreographic passage from Boris Eifman's "Red Giselle" ballet, describing the tragic fate of a famous Russian ballerina Olga Spessivtseva (to the music of Tchaikovsky, Schnittke, and Bizet).