Copenhagen has a significant jazz scene that has existed for many years. It developed when a number of American jazz musicians such as Ben Webster, Thad Jones, Richard Boone, Ernie Wilkins, Kenny Drew, Ed Thigpen, Bob Rockwell, Dexter Gordon, and others such as rock guitarist Link Wray came to live in Copenhagen during the 1960s. Every year in early July, Copenhagen's streets, squares, parks as well as cafés and concert halls fill up with big and small jazz concerts during the Copenhagen Jazz Festival. One of Europe's top jazz festivals, the annual event features around 900 concerts at 100 venues with over 200,000 guests from Denmark and around the world.