She performed in several world premieres at the Met, including Reginald De Koven's The Canterbury Pilgrims (1917), Charles Wakefield Cadman's Shanewis (1918), Giacomo Puccini's Il Trittico (1918), Albert Wolff's L'oiseau bleu (1919), and Henry Kimball Hadley's Cleopatra's Night (1920).
Some of the performances in which Machaidze has taken part have also been videotaped and released on DVD, including: Il Trittico, La Scala, 2008; Romeo et Juliette, Salzburger Festspiele 2008; I Puritani, Teatro Comunale di Bologna or recently La Bohème with Anna Netrebko in Salzburg.