He has performed on stages throughout the world and collaborated on many eclectic projects as a composer, performer and improviser. These have included regular collaborations with Radio-Canada since 1996; participation in the international MediMuses project as a member of the group researching the history and repertoire of Mediterranean music and as a contributor on several publishing and recording initiatives from 2002 to 2005; musical collaborations with the Atlas Ensemble (Holland) and, as a tutor, with the Atlas Academy, on a dual project aimed at linking contemporary music with oral traditions, since 2009. 

Numerous musical groups and institutions have called upon his talents as a composer, including the Orchestre symphonique de Montréal, the Nouvel Ensemble Moderne and the European Broadcasting Union. He has also composed music for documentary and feature films, including Jabaroot and Voices of the Unheard. 

Since the summer of 2017, he is Associate Artist at the prestigious Rencontres musicales de Conques festival (formerly the Conques, la Lumière du Roman music festival), where he presented many recent creations with Constantinople.

Kiya was a member of the Conseil des arts de Montréal for seven years, serving as chair of the music decision-making committee for three years, and he is now a Board member of the Conseil des arts et des lettres du Québec. He also received a mandate from the Conseil québécois de la musique to set up a committee that will examine the role of music from around the world within the context of performance music. His desire to be involved and engaged with the musical community and Quebec society led him, in 2017, to co-found the Centre des musiciens du monde in Montreal, for which he will serve as artistic director. 

His artistic projects and creations have received the support of the Canada Council for the Arts, the Conseil des arts et des lettres du Québec and the Conseil des arts de Montréal for years.

Since its founding, the ensemble promotes the creation of new works incorporating musical elements of diverse musical traditions around the world, drawing from medieval manuscripts to a contemporary aesthetic, passing by Mediterranean Europe to Eastern traditions and New World Baroque. Underpinned by a spirit of research and creation, Constantinople has joined forces with leading international artists such as singers Marco Beasley, Françoise Atlan, Savina Yannatou and Suzie Le Blanc; the Mandinka griot Ablaye Cissoko; the Greek ensemble En Chordais, the Belgian duo Belem and the American group The Klezmatics; sarangi virtuoso Dhruba Ghosh, Syrian clarinettist and composer Kinan Azmeh, and Iranian kamancheh master Kayhan Kalhor.

Regularly invited to perform in international festivals and prestigious concert halls, such as the Salle Pleyel in Paris, the Berliner Philharmonie, the Fes Festival of World Sacred Music in Morocco, the Rencontres musicales de Conques in France, the Aga Khan Museum in Toronto, the Cervantino Festival in Mexico, the Festival de Carthage in Tunisia, the Onassis Cultural Centre-Athens and the BOZAR in Brussels, Constantinople is acclaimed by the public, music professionals and critics alike. The ensemble has 19 albums to its credit on labels Analekta, Atma, World Village, Buda Musique, MaCase, Glossa, and Dreyer Gaido. Over the past fifteen years, Constantinople has created nearly 50 works and travelled to more than 240 cities in 54 countries.