Alexandru Constantin has a complex artistic and academic background, distinguishing himself through his work in opera, vocal-symphonic music, and chamber recitals.
His repertoire includes important roles from universal opera literature, such as Escamillo from „Carmen” by Georges Bizet, Marcello from „La Bohème” by Giacomo Puccini, Don Giovanni from the opera of the same name by Wolfgang Amadeus Mozart, Valentin from „Faust” by Charles Gounod, Germont from „La Traviata” by Giuseppe Verdi, and Evgheni Oneghin from the masterpiece of the same name by Piotr Ilici Ceaikovski.
Alexandru Constantin has also distinguished himself in the vocal-symphonic repertoire, performing landmark works such as „Carmina Burana” by Carl Orff, „Requiem” by Gabriel Fauré, and creations by Gaetano Donizetti and Felix Mendelssohn.
His concert activity includes recitals of lieder, arias, and duets from famous operas, performed on prestigious stages and in cultural institutions in Romania, such as the Opera Națională București, the „George Enescu” Museum, the Filarmonica din Oradea, and the Teatrul Național din București. He has been invited to gala concerts and important cultural projects, including „Shakespeare și Muzica”, „Take an Opera Break”, and the Concertul Extraordinar de Anul Nou al Fundației Calea Victoriei.