Jazz developed from a blend of African-American musical traditions, including blues, ragtime and European harmony, as well as African rhythmic rituals, hymns, marches.

It's time to jazz up—literally. From the smoky clubs of London to the bustling streets of Tokyo, jazz has crossed borders, blended cultures and turned improvisation into an art form. Every April 30, International Jazz Day—established by UNESCO in 2011—celebrates this genre's role in promoting peace, dialogue and unity. This music form emerged in the late 19th and early 20th centuries in New Orleans, a city alive with musical traditions from Africa, Europe and the Caribbean. Rooted in blues and ragtime, jazz quickly evolved, with pioneers like Louis Armstrong and Ella Fitzgerald giving it a voice. In the United Kingdom, jazz flourished in the 1940s, with London's Ronnie Scott's Jazz Club, founded in 1959, becoming a legendary venue. British jazz icons like Tubby Hayes and Courtney Pine pushed the genre forward, while the EFG London Jazz Festival remains a major event, drawing international stars and local talent alike.

Today, jazz is everywhere—from Brazilian bossa nova to Ethiopian Ethio-jazz, proving that a good groove knows no borders. This photo of jazz legend John Coltrane and his band performing in London, England, is a perfect example of jazz's worldwide impact.