A major (Equatorial Guinea, South Korea and Kyrgyzstan)

A minor (Bulgaria, Japan, Kenya and Tajikistan)

A-flat major (Algeria, Bangladesh, Burundi, Eswatini, Lithuania, Malaysia, Mongolia, Myanmar, Rwanda, San Marino and Trinidad and Tobago)

B-flat major (Antigua and Barbuda, Argentina, Australia, Belgium, Benin, Bolivia, Bosnia and Herzegovina, Botswana, Cameroon, Democratic Republic of the Congo, Fiji, Grenada, Guinea-Bissau, Guyana, Ireland, Jamaica, Kiribati, Kuwait, Lesotho, Liberia, Madagascar, Papua New Guinea, Samoa, Serbia, Slovenia, Sweden, Switzerland, Tuvalu, United States of America, Vanuatu and Vietnam)

C major (Angola, Chile, Colombia, Croatia, Dominica, East Timor, Ethiopia, the Gambia, Jordan, North Korea, Luxembourg, North Macedonia, Marshall Islands, Mexico, Namibia, Panama, Russia, Saint Vincent and the Grenadines, Spain, Sri Lanka, Taiwan, Thailand, Togo, Uruguay and Yemen)

C-sharp major (Cape Verde and Pakistan)

D major (the Bahamas, Bahrain, Denmark, El Salvador, Eritrea, Estonia, Finland, Mauritius, Nicaragua, Seychelles and Sudan)

D minor (Azerbaijan and Kazakhstan)

D-flat major (Haiti and Norway)

E major (Bhutan, Ecuador, Iceland and Libya)

E minor (Iraq, Israel and Romania)

E-flat major (Afghanistan, Austria, Canada, Costa Rica, Cuba, the Czech Republic, the Dominican Republic, Germany, Hungary, India, Mauritania, Palau, Portugal, São Tomé and Príncipe, Senegal, South Sudan and Suriname)

F major (Armenia, Belarus, Belize, Brunei, Burkina Faso, Chad, Comoros, the Republic of the Congo, Cyprus, Djibouti, Egypt, Gabon, Greece, Guatemala, Guinea, Laos, Malawi, the Maldives, Malta, the Federated States of Micronesia, Moldova, Nauru, Niger, Nigeria, Palestine, Paraguay, Peru, Poland, Saudi Arabia, Singapore, Somalia, Syria, Tanzania, Tonga, Tunisia, Turkmenistan, the United Arab Emirates, Vatican City, Venezuela and Western Sahara)

F-sharp major (Ivory Coast and Uganda)

G major (Albania, Andorra, Barbados, China, Ghana, Guinea, France, Indonesia, Iran, Kosovo, Latvia, Lebanon, Mali, Monaco, Mozambique, the Netherlands, New Zealand, Oman, Sierra Leone, Solomon Islands, Ukraine, the United Kingdom, Uzbekistan, Zambia and Zimbabwe)

G minor (Cambodia, Nepal, Slovakia and Turkey)

Played at any key or mixed keys (Brazil, the Central African Republic, Georgia, Honduras, Italy, Montenegro, Morocco, the Philippines and South Africa)