Ooh, I’ve got a couple! I can sing, from memory and on key, both The Nations of the World and The 50 US States and Their Capitals from the cartoon Animaniacs. Those of you familiar with the songs should be reasonably impressed. 
Let’s see if I can type out Nations of the World in its entirety. Please excuse any misspelled country names; I’m not going to look them up. 
United States, Canada, Mexico, Panama, Haiti, Jamaica, Peru! Republic Dominican, Cuba, Carribean, Greenland, El Salvador, too! Puerto Rico, Columbia, Venesuela, Honduras, Guiana and still, Guatamala, Bolivia, then Argentina and Ecuador, Chile, Brazil! Costa Rica, Belize, Nicaragua, Bermuda, Bahamas, Tobago, San Juan! Paraguay, Uruguay, Suriname and French Guiana, Barbados and Guam!
Norway and Sweden and Iceland and Finland and Germany, now all once piece. Switzerland, Austria, Czechoslovakia, Italy, Turkey and Greece! Poland, Romania, Scotland, Albania, Ireland, Russia, Oman! Bulgaria, Saudi Arabia, Hungary, Cyprus, Iraq and Iran! There’s Syria, Lebanon, Israel, Jordan, both Yemens, Kuwait and Barhain! The Netherlands, Luxembourg, Belguim and Portugal, France, England, Denmark and Spain!
India, Pakistan, Burma, Afghanistan, Thailand, Nepal and Bhutan! Kampuchea, Maylasia then Bangladesh, Asia, and China, Korea, Japan! Mongolia, Laos and Tibet, Indonesia, the Phillipine islands, Taiwan. Sri Lanka, New Guinea, Sumatra, New Zealand, then Borneo and Viet Nam! Tunisia, Morocco, Uganda, Angola, Zimbabwe, Djbouti, Botswana! Mozambique, Zamba, Swaziland, Gambia, Guinea, Algeria, Ghana!
Burundi, Lethsoto, and Malawai, Togo, the Spanish Sierra is gone! Niger, Nigeria, Chad and Liberia, Egypt, Benin and Gabon! Tanzania, Somalia, Kenya and Mali, Sierra Leone and Algier! Dahomie, Namibia, Seneca, Libya, Camaroon, Congo, Zaire! Ethiopia, Guinea, Bissau, Madagascar, Rwanda, Mayotte and Cayman! Hong Kong, Abu Dhabi, Qatar, Yugoslavia…
Crete, Mauritania, then Transylvania, Monoco, Lichtenstein, Malta and Palestine, Fiji, Australia, Sudan!