Sundance Film Festival | Cannes Film Festival | Toronto International Film Festival | Glastonbury Festival | Edinburgh Festival | Royal Festival Hall | Venice Film Festival | festival | Spoleto | Tribeca Film Festival | Salzburg Festival | Montreux Jazz Festival | Edinburgh Festival Fringe | Oregon Shakespeare Festival | Monterey Jazz Festival | film festival | Bayreuth Festival | Metro Manila Film Festival | Newport Jazz Festival | Locarno International Film Festival | International Film Festival of India | Festival of Britain | Glyndebourne Festival Opera | Coachella Valley Music and Arts Festival | Viña del Mar International Song Festival | Vancouver International Film Festival | Sanremo Music Festival | Aspen Music Festival and School | Tanglewood Music Festival | Fuji Rock Festival |
She has participated in numerous music festivals including Marlboro, Tanglewood, and the Spoleto Festival in Italy.
In 1973, Theyard sang in Manon Lescaut at the Spoleto Festival, with Nancy Shade and directed by Luchino Visconti.
In 1955 he made his debut with the National Symphony Orchestra of Mexico and in 1960 made his opera debut with Salome at the Spoleto Festival in Italy.
As a singer she has performed with international and American Opera companies as a principal artist: La Traviata at the Metropolitan Opera, La Favorite in Montpellier, France, and Goya at the Spoleto Festival in Italy.
at The White House 6 times, as well as The Kennedy Center for the Performing Arts, The Tampa Bay Performing Arts Center,The Filene Center at Wolf Trap, The Savannah Music Festival, and Charleston's Piccolo Spoleto Festival.
Moses has also been part of fourteen festivals; among them The Adare Festival in Ireland, The Cabrillo Festival, Mostly Mozart-NYC, and The Spoleto Festival in Italy.