Kateřina Jalovcová sudied voice at the Prague conservatory under the tutelage of Brigita Šulcová. From 2004 she was a soloist of the opera at the F. X. Šalda Theatre in Liberec and performed as a permanent guest at the opera houses in Olomouc, Plzeň and the National Theatre in Prague. Since 2006 she has been a soloist of Prague National Theatre, where she has portrayed Bizet's Carmen, Dalila (Saint-Saëns: Samson et Dalila), Mélisande (Debussy: Pelléas et Mélisande), Muse and Nicklausse (Offenbach: Les contes d'Hoffmann), Olga (Tchaikovsky: Eugene Onegin), Mozart's Annio (La clemenza di Tito) and Cherubino (Le nozze di Figaro), Smetana's Maiden Rosa (The secret) and Radmila (Libuše), Dvořák's Kate (The Devil and Kate), Janáček's Varvara (Káťa Kabanová, stage direction Robert Wilson) and Fox (The Cunning Little Vixen), Bersi (Giordano: Andrea Chénier) and others. Her repertoir also includes the roles of the Witch in Rusalka (Dvořák), Verdi's Azucena (Il trovatore), Ulrica (Un ballo in maschera), Fenena (Nabucco) and Preziosilla (La forza del destino), Puccini's Suzuki (Madama Butterfly) and Tigrana (Edgar), Donizetti's Giovanna Seymour (Anna Bolena), Massenet's Dulcinée (Don Quichotte), Siebel (Gounod: Faust), Konchakovna (Borodin: Prince Igor) or Fyodor (Mussorgsky: Boris Godunov). In June 2007 at the Opera festival in Wexford, Ireland, she won the most talented young singer award for her performance of the Witch (Dvořák: Rusalka). At the following year's festival she sang the role of Lel the shepherd (Rimsky-Korsakov: The Snow Maiden) under the conductor Dmitri Jurowski. She performed Suzuki and Fenena at the Opera House in Graz, Austria, and Azucena at the Teatro Municipale di Piacenza a Teatro Comunale di Bolzano. On concert stages she has appeared with the Prague Symphony Orchestra as Jocaste in Stravinsky's oratorio Oedipus Rex and in Dvořák's Requiem conducted by Jiří Kout. She sang in Dvořák‘s Requiem also at the festival Prague Spring 2012 (Czech Radio Symphony Orchestra conducted by Ondrej Lenárd). She recorded Mahler's Symphonies Nr. 2 and Nr. 8 with the Czech National Symphony Orchestra under the baton of Libor Pešek.