Just about the entire globe is represented in Roskilde Festival's music programme. Few other festivals offer as gaudy a mix of foreign dialects and traditions - this Wednesday in a saturated hotchpotch of electronic and organic dance beats.

Today's announcement is in itself a little circumnavigation of the globe with Africa, South America, the US and Denmark as destinations on the journey.

BOMBA ESTÉREO (COL) combine their own music traditions such as cumbia and champeta with Jamaican dub, Angolan kuduro and American hip hop. Look forward to a hot, South American dance party, which is the embodiment of Colombia and the nightclub sounds of the western music scene.

GANGBÉ BRASS BAND (BEN) is a steel brass band that crosses New Orleans jazz and bebop with local music traditions such as juju and Afro beat. A renewing union of the city jazz club and West Africa's dusty desert world.

N.A.S.A. (US) have set out to break down the borders between countries as well as music genres. Their music is a spluttering horn of plenty of all styles that rhyme with dance or hip hop - and the melted down genre fun is accompanied by an imaginative, trippy dance show.

NEGASH ALI (DK) has proven with his solo album Asmarino that he is capable of delivering moving English-language hip hop. The African-born Dane brings a small soul orchestra to back him up.

RADIOCLIT presents THE VERY BEST (INT) is the result of a meeting between a European DJ/producer duo and the Malawian singer Esau Mwamwaya. Here the trio combines the sound of heavy, clubby electronica with tropical rhythms. The result is a fascinating and dance-friendly hotchpotch that will make advocates of clear genre boundaries run away screaming.