Mario Alves (tenor) is singing Ruggero in "La Rondine" at Teatro Nacional de Sao Carlos in Lisbona. Performances on 17, 19, 21, 23, 25 May.
Leo An (baritone) is singing the title role in "Nabucco" at Washington Opera on 15 May.
Luis Cansino (baritone) is singing Juan Pedro at Opera Gala at Teatro Jorge Eliécer Gaitán in Bogotà. Performances on 4 and 5 May.
Mark S. Doss (basso-baritone) is singing the role of Cantor in "Sacred Service" by E. Bloch at the Rice University of Houston (Texas) on 19 May.
Francesco Marsiglia (tenor) is singing Belmonte in "Il Ratto dal Serraglio" at Teatro Olimpico in Vicenza. Performances on 20, 21 and 23 May.
Giulio Pelligra (tenor) is singing Sebas in "Der König Kandaules" at Teatro Massimo in Palermo. Performances on 16, 17, 18, 19, 20 and 22 May.
Marco Filippo Romano (baritone) is singing Taddeo in "L'Italiana in Algeri" at Teatro Comunale di Bologna. Performances: 12, 16 and 18 May.
Abramo Rosalen (basso) is debuting Mustafà in "L'Italiana in Algeri" at Teatro Comunale in Bologna. Performances on 12, 16 and 18 May.
He's singing Sacrae Symphoniae for choir and Flavio Testi's Orchestra di, c. Darrell Ang, at Auditorium Fondazione Cariplo in Milano on 31 May.
David Wilson Johnson (baritone) is singing "Elias" by Mendelssohn at Teatro Monumental in Madrid on 3 and 4 May; he is singing "Vier ernste Gesange" by Brahms, at Brahms Festival in Rotterdam on 12 May; he is singing "Deutsches Requiem" by Brahms , at Amsterdam Concertgebouw, from 17 to 22 May.