Alejandro Beresi studied the flute at the University Conservatory of Rosario (Argentina), the city where he was born. He has been teacher at the Guadalajara University of Mexico-city and was member of the O.S.N.O. orchestra in the same city. He toured with this orchestra in Mexico and the US.

He holds the Diploma from the Brussels Royal Conservatory and from the Conservatoire royal de Mons (Belgium). He participates in numerous chamber music ensembles and orchestras such as the former RTBf orchestra, the Belgian National Orchestra, Oratorio,... He teaches flute in various Belgian institutions and directs masterclasses abroad.

He played several concerts as soloist and chamber musician in Europe and Asia and created many contemporary European and South-American works.