What we do

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Felix Krieger, who began his career as an assistant to Claudio Abbado at the Berliner Philharmoniker, is the founder and artistic director of Berliner Operngruppe and in worldwide demand in opera, ballet, and symphonic concerts with major orchestras and opera houses. During the season 2023/24 Mr. Krieger will be conducting important works internationally, including Giovanna d’Arco by Verdi at the Palacio de Bellas Artes, Mexico City, and Britten’s A Midsummer Night’s Dream at Korea National Opera in Seoul. Highlight of the 2022/23 season was the world premiere of Donizetti’s Dalinda under Krieger’s baton to jubilant critical acclaim. Dalinda will be released as CD/album in march 2024 by Oehms Classics. Further important new productions in the past season included Otto Nicolai’s opera Die lustigen Weiber von Windsor with the Berliner Operngruppe chorus and the Brandenburg Symphony, and Richard Strauss’ Ariadne auf Naxos in São Paulo. In recent years Felix Krieger had acclaimed debuts at Dresden’s Semperoper conducting Mozart’s Magic Flute, with La clemenza di Tito at Teatro São Pedro in São Paulo, at Opera Bellas Artes in Mexico-City with Verdi’s Stiffelio, at the Daegu International Opera Festival in Korea with Verdi’s Don Carlo, with Lehár’s Die lustige Witwe at Teatro Carlo Felice in Genua, with Mozart’s Il re pastore at Teatro Verdi in Trieste and Psyché by César Franck at Opéra National de Paris. At Theater Lübeck he conducted Mozart’s Così fan tutte. Mr. Krieger also conducted productions at Deutsche Oper Berlin (Swanlake), Cape Town Opera (Cunning Little Vixen), Staatsoper Stuttgart (Hänsel und Gretel), Gulbenkian Foundation Lissabon (Magic Flute) and with London’s Chelsea Opera Group (Francesca da Rimini, Les pêcheurs de perles, Idomeneo). From 2013 until 2017 he served as regular guest conductor at Teatro Communale di Bologna. Having conducted the Bologna world premiere of Scannavini’s La Doppia Notte – Aida e Tristan, he led productions of Tchaikovsky’s Swan Lake, La Strada by Nino Rota, Stravinsky’s Le Sacre du Printemps and the La Fura dels Baus production of El Amor Brujo by De Falla. Felix Krieger has conducted major orchestras, including the Chicago Symphony Orchestra, BBC Scottish Symphony Orchestra, London Sinfonietta, Berlin Staatskapelle and Sächsische Staatskapelle Dresden, Deutsches Symphonie-Orchester Berlin, Bucharest’s Enescu Philharmonic, the Orchestre de l’Opéra National de Paris, Stuttgarter Kammerorchester, Bach Collegium Stuttgart, and SWR Stuttgart Radio Symphony in Baden-Baden. The Chicago Symphony Orchestra had its much-publicized 2002 debut in the People’s Republic of China under the baton of Felix Krieger, performing Mozart’s Jupiter Symphony and Brahms’ First Symphony. Following his 2003 debut at Berlin’s Staatsoper Unter den Linden, he regularly conducted the Staatskapelle Berlin in a wide range of repertoire, including the critically acclaimed production Der Kaiser von Atlantis by Viktor Ullmann (2013). In 2010 Felix Krieger established the Berliner Operngruppe. The ensemble has since earned rave reviews for its semi-staged productions of rare opera discoveries at Berlin’s iconic Konzerthaus, including the Berlin premieres of Stiffelio, Puccini’s Edgar and Mascagni’s Iris. In June 2022 his Berliner Operngruppe presented premieres of Mascagni’s Zanetto and Il Segreto di Susanna by Ermanno Wolf-Ferrari. In 2021 they gave the German premiere of Donizetti’s Deux Hommes et une femme. In 2011 and 2012 Felix Krieger served as music director of Projeto Musica Orquestral Alemã in São Paulo, conducting numerous concerts featuring core works of German orchestra repertoire from Baroque to 20th-century music. Also in São Paulo, he led Camerata Aberta in a number of South American premieres of works by Stockhausen, Henze, Rihm, and Kagel. A prolific composer, Felix Krieger saw his work Cantus I – Zwischen den Welten (2015) for chamber ensemble premiered at the 49th Festival Musica Nova Gilberto Mendes in Brazil. In 2021, ensemble unitedberlin played the world premiere of Cantus III – Íthymbos (2020) at Konzerthaus Berlin, performing the full Cantus cycle for the first time. His works are published by Universal Edition Wien. Felix Krieger has conducted several critically acclaimed CD productions. His complete recording of Mascagni’s Iris (2021, Oehms Classics) received several nominations for the Opus Klassik award (including “Conductor of the Year”), for the prestigious Deutsche Schallplattenkritik award, and the International Classical Music Awards 2022. In 2018 Sony Classical released his album The Art of Ensemble with London Sinfonietta and works by Spanish composer Benet Casablancas. Born in Freiburg, Germany, Felix Krieger learnt the piano from the age of six, later adding the viola. He was a junior fellow at the Freiburg University of Music from the age of fifteen, studying piano with Andreas Immer. He studied conducting at the Hamburg University of Music and Theatre with Klauspeter Seibel. In 2001 he completed his studies as a master student with Carlo Maria Giulini at Scuola di Musica di Fiesole in Italy. Aged twenty-two, he was appointed assistant to Claudio Abbado at the Berliner Philharmoniker. Felix Krieger later served as an assistant, director of studies, and musical supervisor at the Bayreuth Festival, where he assisted with the acclaimed Parsifal production led by Stefan Herheim and Daniele Gatti. He also obtained critical input on contemporary music from his collaboration with Michael Gielen.

Alexandra Nowakowski is a lyric coloratura soprano praised by Opera News for her "impassioned singing" and "silvery voice". Alexandra returns to The Metropolitan Opera for the 2022/23 season to cover Barbara/Mrs. Latch in The Hours (Puts), Voce dal cielo in Don Carlo, and Sophie in Der Rosenkavalier. Alexandra will have her official Spanish opera debut as Manon at Oviedo Opera House 

As a finalist in the El Primer Palau competition, she presents a solo recital with Michał Biel at the Palau de la Música in Barcelona and will made her debut at the prestigious Life Victoria Festival this fall. 

She also sings Mozart's K. 165 Exsultate Jubilate with Symphony in C. In the 2021/22 season, Nowakowski sang Shostakovich's Op. 127 with the Brooklyn Art Song Society. She joined the roster of The Metropolitan Opera to cover Zerbinetta in Strauss' Ariadne auf Naxos​, Lucia in Donizetti's Lucia di Lammermoor, and Gilda in Verdi's Rigoletto. ​She was also a recipient of the Beebe Fund fellowship which aided her in recording her debut album of all Polish music, KRAINA. Alexandra was a Cafritz Young Artist with the Washington National Opera and was part of the Academy of Vocal Arts (AVA) in Philadelphia.

The Swiss-Mexican soprano was born in the city of Puebla and began her singing studies at the National Conservatory of Music, furthering her training at the SIVAM. She made her debut at the Palacio de Bellas Artes as Marie in Donizetti's La Fille du Régiment under the baton of Enrique Patrón de Rueda alongside Mexican tenor Javier Camarena, with whom she has frequently shared the stage since. She later joined the International Studio of the Opernhaus Zürich, under the tutelage of the great tenor Francisco Araiza, and has been a soloist with the company since 2007.

Among the roles she has interpreted are: Musetta in Puccini's La Bohème; Adina in Donizetti's L’elisir d’amore and Norina in Don Pasquale; Berenice in Rossini's L’occasione fa il Ladro, Giulia in La Scala di Seta, Berta in Il barbiere di Siviglia, Contessa di Folleville in Il Viaggio a Reims and Isolier in Le Comte Ory; Blonde in Mozart's Die Entführung aus dem Serail, Madame Herz and Mademoiselle Silberklang in Der Schauspieldirektor, and Despina in Così fan tutte; Dorinda in Händel's Orlando; Stasi in Kálmán's Die Csárdásfürstin, under the baton of conductors such as Hengelbrock, Weikert, Fedoseyev, Christie, Dantone, Minkowski, Santi, Fischer, Luisi, Fasolis, Welser-Möst, Mazzola, Haïm, Minasi, Noseda, Capuano, and Viotti, among others.

Rebeca has shared the stage with great artists such as Ruggiero Raimondi, Cecilia Bartoli, Javier Camarena, Piotr Beczala, Rolando Villazón, Juan Diego Flórez, Plácido Domingo, Lawrence Brownlee, Ildar Abdrazakov, and Alessandro Corbelli, as well as the great José Carreras,

Her career has been particularly marked by her connection with the renowned Italian mezzo-soprano Cecilia Bartoli, with whom she has worked constantly since 2009. Her most notable projects include the DVD of Le Comte Ory at the Opernhaus Zürich, the production of Norma of Bellini at the Salzburger Festspiele, the DVD of L’italiana in Algeri, and the production of Rossini's Il Barbiere di Siviglia under the stage direction of Rolando Villazón.

Throughout her professional career, she has performed at venues such as the Komische Oper in Berlin, Wiener Konzerthaus, Wiener Staatsoper, Bayerische Staatsoper, Konzerthaus Dortmund, Severance Hall with the Cleveland Orchestra, Salzburger Festspiele, Opéra Monte-Carlo, Edinburgh Festival, Théâtre des Champs-Élysées, Festspielhaus Baden-Baden, Tonhalle Zürich, Det Kongelige Teater, National Concert Hall in Dublin, Auditorio Nacional in Mexico, and the Festival de Mentes Brillantes: La ciudad de las Ideas.

Her discography already includes four titles on DVD: The Magic Flute for Childrenon Arthaus Musik, Le Comte Ory with Decca, Das Land des Lächelns with Accentus Music, and L’Italiana in Algeri on Unitel Edition.

Among her upcoming engagements are a recital at the Festival Culturel International de Musique Symphonique in Algeria and another at the Dialoge-Festival alongside tenor Rolando Villazón at the Mozarteum in Salzburg, as well as the revival and recording of Siegfried under the musical direction of Gianandrea Noseda at the Opernhaus Zürich, as well as Lehár's Das Land des Lächelns, where she shares the stage with Piotr Beczala and Julia Kleiter.

Karen is a lyric soprano who began her studies at the Music Conservatory of the State of Mexico. She was a former student of Ramón Vargas and Plácido Doming and completed her studies at the Plácido Domingo Perfection Center at the Palau de Les Arts in Valencia, Spain, where she made her international debut working with conductors such as Fabio Biondi, Keri-Lyn Wilson, Ramón Tebar, among others, following numerous master classes with Gregory Kunde and Davide Livermore.

Some of her signature roles include Mimì in La Bohème which she has performed at the Euro Mediterraneo Festival in Taormina, broadcasted in various international film theaters and at the San Carlo Theater in Napoli; she has been Fiordiligi in Così fan tutte at the Dubai Opera Theater and at the Teatro Verdi di Trieste, Servilia in La Clemenza di Tito at the Palau de Les Arts, Amore and Giunone in Il Ritorno D’Ulisse in Patria at the Elbphilharmonie, Donna Anna in Don Giovanni at the Macerata Opera Festival and at the Teatro Comunle di Sassari, Eupaforice in Montezuma at the Teatro de Bellas Artes in Mexico City, Micäela in Carmen at the Arena in Verona in which she debuted with great success which made her return to open the stagione lirica at the same theater in 2022. Among her recent commitments highlights Mimì in La Bohème at the Teatro Filarmónico di Verona and the Teatro Comunale di Bologna with Graham Vick as stage director; Violetta’s debut in La Traviata at the Teatro della Fortuna, Teatro dell’Aquila and the Teatro Ventidio Basso, the Circuito Marchigiano, and she will soon perform as Adina in L’Elisir d’amore at the Teatro Comunale di Bologna and Donna Elvira at the same theater.

She has two recordings made at the Vielki Theater in Warsaw with the Europa Galante orchestra led by the renowned Italian Fabio Biondi: Gulnara in Il Corsaro by Verdi and Hrabina by Moniuszko.

Yeraldin León is a remarkable Colombian mezzo-soprano making waves in the world of opera. Her journey into the enchanting realm of music began with a passion ignited during her childhood in Colombia, where she discovered her innate talent for vocal expression, continuing her musical training at the Superior School of Music Reina Sofía in Madrid, and was honored as outstanding singer of the Alfredo Kraus singing chair, award given by the Queen herself. Embracing her calling, she embarked on a path of musical excellence that has seen her grace prestigious stages across the globe. Yeraldin's performances have captivated audiences with her emotive portrayals of various characters, from the commanding presence of Amneris in Verdi's Aida to the whimsical charm of Puss in Boots in Montsalvatge's opera, Dryade in Ariadne auf Naxos,  her versatility knows no bounds. Her interpretations have graced renowned venues including the Teatro Real de Madrid, Teatro Colón de Bogotá, and the Teatro López de Ayala de Badajoz. In addition to her operatic triumphs, Yeraldin has enraptured listeners with solo concerts and oratorios, showcasing her vocal prowess across a diverse repertoire, from the solemn depths of Mozart's Requiem to the celestial heights of Beethoven's Symphony No. 9, her performances resonate with depth and emotion, leaving an indelible impression on all who have the privilege of experiencing her artistry. Yeraldin's recitals are a testament to her ability to weave storytelling through song, drawing audiences into worlds both familiar and fantastical, from the haunting melodies of Shostakovich to the timeless compositions of Vivaldi and Mozart, her recitals offer a journey through the rich tapestry of classical music, each note imbued with passion and meaning. Yeraldin's dedication to her craft has been recognized with numerous awards and scholarships, including the Crescendo Young Opera Program and the prestigious Teatro Real Best Student Award, amongst many others. Her talent has been nurtured by institutions such as the Escuela Superior de Música Reina and supported by scholarships from the Fundación Ópera Actual, Asociación Wagneriana de Madrid, Fundación Santodomingo, Fundación Albeniz, and Fundación Carolina. Yeraldin's musical education has been enriched by esteemed mentors and teachers, including Anne Sophie von Otter, Teresa Berganza, Susan Bullock, Francisco Araiza, and Ryland Davies. Under their guidance, she has honed her vocal technique and interpretation, cultivating a depth of artistry that shines through in every performance. Yeraldin León Acosta stands as a testament to the power of passion, perseverance, and talent in the world of opera. With each performance, she continues to enchant audiences and inspire the next generation of musical storytellers. As her journey unfolds, she remains steadfast in her commitment to elevating the art form and sharing its transformative beauty with the world.