Ms. Hass first studied singing in Portiers, France after which she studied school music studies in Kassel. She also trained as a singer with a focus on Opera and Song at the Hochschule für Künste Bremen with the Professor Gabriele Schreckenbach and Kammersinger Mihai Zamfir.

Further training was done with Theo Wiedebusch of the Bremer Theatre. There she worked on the lyrical youth drama Opera repetoire. She has also perforformed extensively in projects including the Soprano group of the Carmina Burana in the Opera house Danzig,
Sopranpartie in "Carmina Burana" im Opernhaus Danzig, numerous song nights in and outside Germany, Rundfunkmitschnitte, master courses with Julia Hamari, Sena Jurinac and Thomas Quasthoff

Since 1997, she has been working as a freelance singing teacher and singer and giving lessons in singing and Interpretation in Bremen, Bayreuth and Toscana. Since 2000, she has also been working regularly as a juror for the "Jugend musiziert". She has been serving as a singing teacher fort he EUMAC in Bremen since autumn, 2005. Her CDs include:

"Après un rêve" (französische Spätromantik)
"Und sie komponieren doch" (Werke von Komponistinnen)

Richard McCowen was born in Oxnard, California (USA).
His first singing lessons were with Barry Hahner in Nuernberg after which he studied at the Institute of Art and Music in San Francisco under the direction of Prof. Page Swift. He then moved to Germany and studied at the Berliner Musikhochschule under the direction of. Peter Maus. He also took private lessons with I‘venza Fogli in Rome and then completed his singing education with Prof. Richard Cross at the Conservatory in Boston.

In America, he had many engagements in California, Massachusetts, Virginia and Canada. His repertoire contains numerous Opera roles including ‘Macduff’ in ‘Verdis’ Macbeth’, ‘Scaramuccio’ in ‘Ariadne auf Naxos’ from Richard Strauss, ‘the Canio’ in ‘Bajazzo’ from Leoncavallo and ‘Luigi’ in ‘Puccinis Il Tabarro’. Richard McCowen lives as a freelance singer in Bremen and works closely with Musica Viva where he performs in concerts of Donizettis Lucia di Lammermoor, Verdis La Traviata and Rigoletto. In the Theater Halle he also briefly took over the role of Othello in Verdis, in a same-named Opera piece.