In addition, folk was also borrowed by composers in other genres. The work of Aaron Copland clearly draws on American folk music. In addition, Paul Simon has drawn from both the folk music of Peru and South Africa, and was clearly instrumental in increasing the popularity of groups such as Ladysmith Black Mambazo, although it is arguable that The Tokens' The Lion Sleeps Tonight is the first example of such a crossover. The Indian sitar clearly influenced George Harrison and others.