His opera repertoire comprises roles such as Don Giovanni, Count Almaviva ("Le Nozze di Figaro"), Alfonso ("Così Fan Tutte"), Mandryka ("Arabella"), Storch ("Intermezzo"), the Count in "Capriccio" and Barbier Schneidebart in "Die Schweigsame Frau," the title roles in "Wozzeck "and "Eugene Onegin," Yeletsky ("The Queen of Spades"), Danilo ("Die Lustige Witwe"), Eisenstein ("Die Fledermaus"), Wolfram ("Tannhäuser"), Kurwenal ("Tristan und Isolde"), Amfortas ("Parsifal"), Beckmesser ("Die Meistersinger von Nürnberg"), Rodrigue ("Don Carlos"), and Frank and Fritz/Pierrot in "Die Tote Stadt," among many other roles.

After a highly successful debut in Reimann’s "Lear" at the Hamburg State Opera in 2012, Bo performed this part again in June 2016 at the Paris Opera in a new production directed by Calixto Bieito and conducted by Fabio Luisi. He brought the house down and the press spoke of this as "the role of his life.” Another recent highlight was Beckmesser in "Meistersinger" in March 2016 at Bastille and in June 2016 at the Budapest Festival. At the occasion of the Wagner Geneva Festival 2013, the Swiss composer Michael Jarell wrote for Bo Skovhus the monodrama "Siegfried, noctourne."

Besides his performances in the major opera houses in Europe, the U.S., and Japan, Bo devotes himself intensively to lied singing. Together with pianists such as Helmut Deutsch, Stefan Vladar, Andreas Haefliger, Yefim Bronfman, Leif Ove Andsnes, Christoph Eschenbach, and Daniel Barenboim, he gives lied recitals in the world's most renowned music centers. As a concert singer Bo has appeared with outstanding orchestras throughout Europe, the U.S., and Japan. He has also recorded many of the central roles of his opera and concert repertoire on CD and a series of recital albums.

Susan has recorded two CDs. Music Web International touted her first CD, "A Moment of Joy," as “a truly inspirational disc.” Her second, "From the Heart: Music for Calm, Inspiration, and Wellness," is a collection of classical vocalizes for voice and piano. Her book, "The 21^st Century Singer, Making the Leap from the University into the World," has been called “a must-read for any emerging singer” by iCadenza Artists. “Kane’s thoughtful yet disciplined approach as outlined in 'The 21^st Century Singer' encourages the kind of self-reflection and creativity that, at the very least, can lend direction and big-picture perspective to career goals while also rekindling a love of singing,” wrote Brian Manternach in Classical Singer Magazine (October 2015). Susan is a tenured faculty member at CSU Los Angeles, a member of the faculty at Angels Vocal Art Summer Opera Intensive, and a frequent guest artist and master teacher at universities nationwide.

Peter continued his piano studies with Professor Leonard Hokanson at the Hochschule für Musik und darstellende Kunst Frankfurt am Main and completed his exam there. Peter’s musical life began in Europe, where he performed as a soloist with orchestra and in concert. Encouraged by the late soprano Arleen Augér, he followed his great interest in chamber music, especially the Lied literature. In the meantime, he has given concerts with many international artists in four continents and in numerous recordings and television appearances.

Peter has performed and recorded with such singers as Kurt Moll, Gabriele Schnaut, Maria Venuti, and Eteri Gvazava. Since completing his studies, he has always taught and is currently Professor for Piano/Lied Interpretation at the Staatliche Hochschule für Musik in Trossingen, Germany. Many of his former piano students have been prize winners in national and international competitions and are also lecturers at music institutes of higher education.

In Frankfurt Peter was the vocal coach of the young Renée Fleming and many of his vocal students currently perform in the great opera houses of the world. He also took over the musical instruction of Die Entführung aus dem Serail from Mozart at the Chicago Opera Theater (COT). In 2003, he became professor for lied Interpretation and piano at the University of Music in Trossingen, Germany. He has given master classes throughout the world, from Finlandand Brazil to the Americas and China and has served as a jury member at international lied competitions in Peking, China. Peter is also co-founder of the Lied Academy in Trossingen, which took place for the eighth time in September 2017.

She has also sung Mozart's Fiordiligi in Düsseldorf, Paris, Vienna, and Nürnberg, Donna Elvira in Zurich and Strasbourg, Constanze in Düsseldorf, Elettra in Paris, Düsseldorf, and Chicago, Sandrina in "La Finta Giardiniera" in Frankfurt, Ismene in "Mitridate, re di Ponto "in Amsterdam, and Celia in "Lucio Silla" at the San Francisco Opera. Alexandra triumphed as Lora in Wagner’s "Die Feen" at both the Dresden and Ludwigsburg Festivals. At Houston Grand Opera, she made her acclaimed debut, alongside Susan Graham, as Ginevrain in Handel’s "Ariodante."  Among her other notable roles are Ellen Orford in Britten’s "Peter Grimes," Antonia and Giulietta in Offenbach’s "Les Contes d’Hoffmann," and Euridice in Gluck’s "Orfeo ed Euridice," with which she made her debut at the Royal Opera House, Covent Garden. Most recently Alexandra sang Michaela in Bizet's "Carmen "at the Vlaamse Opera in a controversial new production by American stage director Daniel Kramer and conducted by rising star Dimitri Jurowski.

An active recording artist, Alexandra’s recordings include Schumann’s "Das Paradies und die Peri "under the direction of John Eliot Gardiner for Deutsche Grammaphone, "Mahler’s 4^th Symphony" with the Netherlands Philharmonic under the direction of Hartmut Haenchen, Mendelssohn’s "Elias" with the Frankfurt Opera Orchestra under the direction of Sylvain Cambreling, Dvorak "Stabat Mater "(world debut recording of the original version) with Accentus, conducted by Laurence Equilbey, a new recording of Beethoven’s "Missa Solemnis" with the Aachen Sinfonie Orchester, Marcus Bosch conducting, and a world premiere recording of "Eduard Marsxen Lieder "with American pianist, Anthony Spiri. Her latest recording of Beethoven concert arias with Jermie Rhorer and the Cercle de l'Harmonie, "Beethoven - Birth of a Master," has received widespread critical acclaim.

Alexandra Coku teaches voice at Germany's University of Trossingen, where she began her appointment as full professor in October 2013.

Céline recorded the entire chamber music works of Dame Ethyl Smyth, and Fanny Mendelssohn-Hensel, and was a member of the jury at the voice competition "Symphonies d'Automne," Mâcon, France. She worked as a vocal coach at the Richard-Strauss Festival in Gambisch-Partenkirchen, at the contemporary music festival "Biennale," Munich, and as musical director and coach for the production of "Les Mamelles de Tirésias" at the Summer Opera School, IVAI, Tel-Aviv, Israel.