To celebrate the 50th anniversary of UNICEF, District Curators, Putumayo World Music, and the National Park Service are cosponsoring the “One World” mini-festival featuring five of today’s leading ethnopop artists. Capercaillie started out humbly as a group of Scottish school chums playing acoustic settings of traditional songs and tunes. But more recently the group has become a highly sophisticated outfit that fuses its members’ Gaelic heritage with funk and Afrobeat rhythms. Making her Washington, D.C., debut is vocalist Inna Zhelannaya (pictured), a Siberian native and classically trained singer who has created her own contemporary style inspired by Russian folk music. The husky-voiced Toni Childs writes songs influenced by her experiences living in Los Angeles, San Francisco, and London. Majek Fashek is a Nigerian reggae master, and Kotoja is a multiethnic band that blends Caribbean and West African styles with rock, blues, and funk. At 4 p.m. at the Sylvan Theater on the Washington Monument grounds. FREE. (202) 783-0360. (Ken Roseman)