In concert, Elsberg has performed Mahler’s Symphony No. 8 with the Teatro Nacional de São Carlos, Verdi’s Requiem with the Copenhagen Philharmonic, Beethoven’s Symphony No. 9 with the Danish National Symphony Orchestra and the Armenian National Philharmonic, St. John Passion with Sinfonia Lahti and the Aalborg Symphony, St. Matthew Passion with the Copenhagen Royal Chapel Choir, and Mozart’s Requiem with the Royal Danish Orchestra and the Armenian National Philharmonic. Contemporary composers Karsten Fundal and Rasmus Zwicki have written oratorios specifically for his profondo bass voice.
Nicolai studied contemporary music at the Rhythmic Conservatory Copenhagen and holds a Master’s degree in classical singing from the Royal Danish Academy of Music, where he trained under Prof. Susanna Eken. In 2019, he participated in the Vocal Residency at the Festival d’Aix-en-Provence.