Selena Pettifer originally studied as a pianist and received her Bachelor of Music in Piano from the University of Melbourne. Selena initially studied as a  mezzo-soprano and has appeared in numerous opera productions, concerts and recitals throughout Australia, Germany and South America. She has won over 50 singing awards at various opera and art song competitions.

In 2017, Selena made her debut in the role of Azucena in "Il Trovatore” with Citi Opera in Melbourne. She also released her first operatic aria album  "Una voce bella", before coming to reside in Berlin. She more recently sang the role of Ortrud from “Lohengrin”, and the role of Wellgunde in “Das Rheingold”  in productions with “Berlin Wagner Gruppe". She also performed the role of Annio from “La Clemenza di Tito” with “Shoestring Opera in Berlin”.

She is currently singing as a dramatic soprano under the direction of the renowned baritone Cesare Colona in the "Internationales Gesangsstudio Berlin eV"

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Nicole Rhoslynn began her career in her early childhood with affiliations to different choirs enabling her to be part of concerts across Europe, the US and South America. She began her education in classical singing when she was 15 years old.

The sopranist was a granted fellow of the International Gesangsstudio Berlin e.V. under the aegis of Eva Wagner-Pasquier, where she studied together with Maestro Césare Colona.

In 2014 and 2018 Nicole Rhoslynn was a laureate of the Internationaler Gesangswettbewerb of the Kammeroper Rheinsberg. She has gained additional stage experience in Berlin with soloists of the Komische Oper Berlin.

Rhoslynn is a granted fellow of the Richard Wagner Association of the City of Minden. In 2015-2016 she was a solist at the Berliner Residenzkonzerte at Orangerie of Schloss Charlottenburg in Berlin.

Furthermore, Rhoslynn was a soloist at the New Years Concerts 2017 at the Konzerthaus Berlin with the Deutsches Babelsberger Filmorchester under the baton of Claus Efland.

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The Ukraine-born soprano Maryna Zubko has been perfecting her vocal art with Cesare Colona in Berlin since 2015. The young soprano completed her vocal studies with distinction at the National Academy of Music of Ukraine Peter Tchaikovsky (2014) and at the University of Music and Performing Arts Frankfurt am Main (2018).

Currently, Maryna Zubko is engaged in the soloist ensemble at the Theater Ulm. In the 2021/2022 season, she was awarded the Ulm Theater Prize in the category "Outstanding Ensemble Member in Musical Theater of the 2021/2022 Season" for her roles of Zerbinetta (Ariadne auf Naxos), Gilda (Rigoletto) and Rosina (Il barbiere di Siviglia), as well as "The Singer of the Season" by the SÜDWEST Presse. In the 2022/2023 season, Maryna Zubko was highly acclaimed by press and audience for the roles of Olympia, Antonia and Giulietta in "Les contes d'Hoffmann" and for Adele in "Die Fledermaus". Next season she debuts with the title role in Donizetti's "Anna Bolena" and in Wagner's "Parsifal" as the 1st Flower Girl.

Previously, the soprano could be heard as a soloist in several opera productions and projects: e.g. at the Staatstheater Darmstadt (Queen of the Night), at the Theater Heidelberg and at the Landestheater Coburg (Marzelline in "Fidelio"), at the Stadttheater Pforzheim (Lucia di Lammermoor), at the Opernfestspiele Immling (Euridice in "Orfeo ed Euridice" as well as the soprano solo in "Carmina burana") and at the Kiev Young Opera (Violetta in "La Traviata").

In recent years, Maryna Zubko has won numerous prizes and awards, including the Lied Prize at the 9th International Lions Singing Competition of the Immling Festival and the 1st Prize and Audience Award at the 32nd International Meistersinger Competition in Neustadt an der Weinstraße. The soprano was a finalist of all major international singing competitions such as ARD Music Competition, Belvedere Singing Competition and Tenor Viñas Singing Competition. She has also received scholarships from the Richard Wagner Foundation (Ulm, Kiev), the Frankfurt Bach Concerts, the Peter Fuld Foundation and the Da Ponte Foundation.

Maryna Zubko has performed as a soloist with the Philharmonic Orchestra of the City of Ulm and the German State Philharmonic Orchestra of the Rhineland-Palatinate. Lieder recitals complete Maryna Zubko's artistic activities.

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Chun-Kai Hsu, a talented countertenor from Taiwan, was awarded 3rd prize at the 5TH INTERNATIONAL SINGING COMPETITION – THE ALIDA VANE AWARD 2019, with renowned soprano Maija Kovalevska as the jury chair. In 2024 he also received a prize at the 12th Lav Mirski International Singing Competition.
During his studies in Hamburg he was able to gain valuable stage and concert experience. On stage he shone as Max in the premiered chamber opera “The Prodigal Father” by Benjamin Helmer and as a ghost in H. Purcell’s “Dido and Aeneas”.
In 2024 he appeared as Judas in Heinrich Schütz's St. Matthew Passion in the Aegidienkirche in Lübeck, and in 2023 he embodied Mordecai in Handel's Esther in the Petri Church in Ratzeburg under the direction of Susanne Bornholdt.
In addition to operas and oratorios, he also enjoys singing contemporary music. In 2023 he presented the song cycle “Öt Arany-dal” by G. Ligeti at the Ligeti Festival in the HfMT Hamburg.
He studied with Simone Durrer-Stock in Lucerne and with Jörn Dopfer in Hamburg. In 2023 he completed his concert exam in singing at the Hamburg University of Music and Theater. In order to gain further stage experience, he continued his studies with a second master's degree in opera singing at the Karlsruhe University of Music with Holger Speck. He was also influenced vocally by the Latvian soprano Inga Kalna. He received musical inspiration from Ira Hochman and Matteo Pirola.

Stefan Stoll, born in Salzburg, completed his studies in musicology and philosophy (in Munich) as well as composition (diploma from the UdK Berlin). He also received singing lessons from Claudia Eder (diploma from Joh. Gutenberg University Mainz), Marianne Fischer-Kupfer, Eike-Wilm Schulte and Cesare Colona. After his first engagement at the Staatstheater Cottbus (1996-2000), where he created roles ranging from Papageno or Figaro-Count to Wolfram and Sharpless and Escamillo, he also became (from 1998) a member of the ensemble at the Komische Oper Berlin, which with tasks like Dr. Bartolo ("The Barber of Seville"), Balstrode ("Peter Grimes", conducted by Kirill Petrenko) and Don Pizarro.

Since 2004, Stefan Stoll has been working on important roles in the heroic baritone repertoire: at the Karlsruhe State Theater, among others, he performed Alberich in all three "Ring" operas, there and also at many other theaters in Germany, Korea and the Ukraine in the "Flying Dutchman" and again in Karlsruhe also the "Rheingold"-Wotan. He made his debut under Kent Nagano in Berlin as Telramund and can be heard as Kurwenal, for example in Beijing in 2007 under the baton of Klaus Weise. Other roles in his wide-ranging repertoire are Fra Melitone, Tomsky, Leporello, Weber's Kaspar and Lysiart and the title role in Marschner's "Vampyr", not to mention roles such as Klingsor, Danton ("Danton's Death" by G.v.Einem), Bartok's "Blaubart " or Nekrotzar in "Le Grand Macabre" by G. Ligeti. In 2009 Stefan Stoll sang the role of Gunther in "Götterdämmerung" under the baton of Zubin Mehta at the Maggio Musicale in Florence and in Valencia. In the same year he also made his debut as Falstaff in Aachen and Dresden. He designed Puccini's Scarpia several times, also on Italian stages. Other Italian roles are Francesco (Verdi, Masnadieri), Dulcamara ("The Potion of Love") and Nabucco. His portrayal of the Grand-Pretre de Dagon in "Samson et Dalila" with José Cura in the title role is available on DVD.

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