In November 2015, Gheorghiu sang at the Elena Obraztsova Opera Ball at the Bolshoi Theatre in Moscow. She co-organized and performed in a humanitarian concert at the Romanian Athenaeum on 29 November to raise funds for the victims of the Colectiv nightclub fire. In December, Gheorghiu sang together with Ramón Vargas and Ghiță Petean in a gala concert at Opéra de Monte-Carlo, from which all proceeds went to the "Fondo Memorial Eduardo Vargas", established in memory of the tenor's deceased son.