American popular music has become extremely popular internationally. Rock, hip hop, jazz, country and other styles have fans across the globe. The combination of parts of international and American popular music has been attempted between the mid-1960s to the mid-1970s. However, the results of synthesis were for the most part unsuccessful. BBC Radio DJ Andy Kershaw, for example, has noted that country music is popular across virtually the entire world. Indeed, out of "all the contributions made by Americans to world culture ... (American popular music) has been taken (most) to heart by the entire world". Other styles of American popular music have also had a formative effect internationally, including funk, the basis for West African Afrobeat, R&B, a major source for Jamaican reggae, and rock, which has profoundly influenced most every genre of popular music worldwide. Rock, country, jazz and hip hop have become an entrenched part of many countries, leading to local varieties like Australian country music, Tanzanian Bongo Flava and Russian rock.