Frank Blees studied singing with Erika Köth, Birgit Nilsson and Walter Berry among others. Following his first engagements in Kaiserslautern, in St. Pölten (Austria), and in Enschede (Netherlands) he worked as a freelance singer from 1990 to 2007, when he became a permanent member of the ensemble of the Mecklenburg State Theater in Schwerin. In Schwerin he could add numerous important roles to his repertory including Eckbert (Weir: Blond Eckbert), Bluebeard (Bartók: Bluebeard's Castle), Kaspar (Weber: Der Freischütz), the Father (Humperdinck: Hansel and Gretel), Plumkett (Flotow: Martha), Frère Laurent (Gounod: Roméo et Juliettte), Don Basilio (Rossini: Il barbiere di Siviglia), Ollendorf (Millöcker: Der Bettelstudent), General Boum (Offenbach: La Grande-Duchesse de Gérolstein - Géneral Boum (Bock: The Fiddler on the Roof) and the title role in Wagner's Der fliegende Holländer.
From the season 2012/13 until the end of the current season Frank Blees is a member of the ensemble of the Dresden Staatsoperette where he sings Sarastro and Sprecher (Mozart: Die Zauberflöte), Kecal (Smetana: The bartered bride), Skomoroch (Rimsky-Korsakov: The Tale of Tsar Saltan), Frank (Strauss: Die Fledermaus), Zsupán (Strauss: Der Zigeunerbaron), Nasoni (Millöcker: Gasparone), Hangman (Weill: The Firebrand of Florence), Alfred Doolittle (Loewe: My Fair Lady) to name just a few of his roles. During the seasons 2013/14 and 2014/15 he did again the title role in Wagner's Der fliegende Holländer, now as a guest at National Theater of Brno, the capital of Moravia in the Czech Republic, and in January 2016 he did again Filippo II in Verdi's Don Carlo in the new production at Landesbühnen Sachsen.
Guest apearances in opera and concerts have taken Frank Blees to Santiago de Chile, Bucarest, Berlin, Cologne (Philharmonie - Romberg: The Student Prince - Dr. Engel), Tbilisi, Amsterdam, Zurich, Helsinki, Vienna (Konzerthaus - R. Strauss: Daphne - First Shepherd &; J. Strauss: Der lustige Krieg - Carlo Spinzi), Lisbon, Palermo (Teatro Massimo - Berg: Lulu - Animal Tamer/Rodrigo), Genova (Teatro Carlo Felice - Mozart: Die Zauberflöte - Sprecher, R. Strauss: Salome - First Nazarene), Leipzig (Oper - Berlioz: Les Troyens - L'ombre d'Hector), Munich (Philharmonie am Gasteig - J. Strauss: Der lustige Krieg - Carlo Spinzi), Bielefeld (Theater - Haubenstock-Ramati: Amerika - Robinson, Beethoven: Fidelio - Don Pizarro, Verdi: Don Carlo - Filippo II), Lübeck (Theater - Wagner: Das Rheingold Wotan, Mozart: Die Zauberflöte - Sarastro, Verdi: Rigoletto - Conte di Monterone, Schoeck: Vom Fischer un syner Fru - Butt), Hildesheim (Wagner: Der fliegende Holländer - title role) and Luxembourg.
H" worked with numerous well-known conductors and stage directors such as Ralf Weikert, Theodor Guschlbauer, Ulf Schirmer, Marc Albrecht, Stefan Anton Reck, John Mauceri, Andreas Baesler, Giuliano Montaldo, Guy Joosten, Keith Warner, Anthony Pilavachi, and Daniele Abbado.
The very extensive repertory of the singer includes many more parts in operas from the Baroque aera to contemporary music. CD and radio recording sessions are part of the work of this versatile singer as well. Moreover, Frank Blees likes to present and promote outside the Spanish-speaking world less known works like the masterpieces of the Spanish zarzuela genre.