Svetla Vassileva performed in a wide range of roles encompassing the repertoire of Puccini, Verdi, Mozart, Donizetti, Leoncavallo, Hindemith and Weill working with such conductors as Bruno Bartoletti, Riccardo Muti, Zubin Mehta, Lorin Maazel, Georges Prêtre, Riccardo Chailly, Daniele Gatti, Vladimir Jurowski, Kent Nagano, Yutaka Sado, Jeffrey Tate, Yuri Temirkanov, Gustavo Dudamel.

She has obtained a great success with Tosca at Palacio de Bellas Artes of Mexico city, Hyogo festival, conducted by Yutaka Sado, Hong Kong Opera, Manon Lescaut at Shanghai and New National Theatre Tokyo, La forza del destino at Sydney, Australia.

She has played this role also in Arena di Verona, Rome Opera, Festival Sant' Ander with Anton Guadagno, Grand Theatre de Geneve, Turin.

Svetla is loved by a long list of movie directors and artists like Franco Zeffirelli, Liliana Cavani, Lina Wertmüller, Cristina Comencini, Gabriele Lavia, Jean Reno.She has filmed I Pagliacci, opposite Roberto Alagna.

She has sung Requiem Verdi, conducted by Lorin Maazel at Festival Verdi- Parma, Jerusalem, Masada, Rossini's Stabat Mater at La Scala of Milan with Chailly, Mahler's Simphony n. 4 in Bologna with Gatti, Die vier letzten lieder by Strauss for the inauguration of the new airport in Mahon, Madeira.

She made her debut in Verdi's Un ballo in maschera in Beijing, China, conducted by Lü Jia, with great success and presented Lo Schiavo by Gomes for the first time in Italy.

Svetla was testimonial of Chanel, for the Chelsea Flower Show, where the mind work of Tom Stuart- Smith and Karl Lagerfeld won the gold award.

[1][2] Laura Biggs of Musical Criticism wrote that Vassileva's performance as Cio-Cio San in Madama Butterfly "delivered a luxurious spinto sound.