ATP International Series | International Monetary Fund | Sundance Film Festival | International Red Cross and Red Crescent Movement | ATP International Series Gold | International Space Station | Amnesty International | International Olympic Committee | Cannes Film Festival | BirdLife International | International Finance Corporation | International Organization for Standardization | International Telecommunication Union | International Criminal Court | One Day International | International Nonproprietary Name | International Labour Organization | International Civil Aviation Organization | International Boxing Federation | Toronto International Film Festival | International Atomic Energy Agency | Glastonbury Festival | International Maritime Organization | International Development Association | John F. Kennedy International Airport | Edinburgh Festival | Royal Festival Hall | Venice Film Festival | Los Angeles International Airport | International Bank for Reconstruction and Development |
Ohyama has always been in demand as a violist and has performed throughout the United States and abroad as recitalist and chamber musician at festivals including Casals Festival, Kuhumo International Festival (Finland), Johannesen International Music Festival (Canada), Okinawa Moon Beach Music Festival (Japan), Brescia and Bergamo Festivals (Italy), Chamber Music Northwest, Sarasota Music Festival and Caramor Chamber Music Festival.