The repertoir of the group "Optimisti" consists of approximately 150 compositions, including popular classical miniatures, dance music and songs.

Their work represents such musical genres as march, polka, tango, waltz, polonaise, two-step, intermezzo, foxtrot, cake-walk, galop, ragtime, charlston, cancan, gavotte, letkiss, serenade, capriccio etc.

The repertoir includes works by composers, such as:
the Straussís family, Jacques Offenbach, E. Waldteufel, R. Rodgers, L. Bernstain, I. Berlin, P. Lincke, S. Joplin, M. Moszkowski, G. Kern,
D. Popper, E. Toselli, K. Veil and others;
as well as by Latvian composers: J. Kalnins, J. Medins, J. Vitolins and others.

The classical repertoir is represented by composers, such as:
W. A. Mozart, R. Schuman, F. Schubert, F. Schopen, R. Leoncavallo, P. Mascagni, Ch. Gounod, G. F. Hendel, R. Wagner, J. Sibelius, G. Donizetti, Ch. Gluck.