. ♪ >> each week, armel ndoumbÉ and the other members of the band sans visa meet to rehearse. ♪ armelo called "petit ndoumbÉ," has been in the band for four years. ♪ the band plays modern makossa, a traditional cameroonian style of dance music which has become a fixture on the world music scene. sans visa's concerts in cameroon's major cities are very popular. ♪ >> as you can see, the mood here with the guys is pretty cool. we work well together during rehearsal. if someone makes a mistake or if something doesn't work right, we talk about it, and then change it, so we can make progress in rehearsal. >> they are rehearsing for this man petit pays, a makossa star , in cameroon who also tours internationally. today he's come to see how the band he mentors is getting along. ♪ petit pays and his music have been a staple in west africa for thirty years. this time, it's a dress rehearsal. adolphe claude moundi - petit pays' real name - has helped launch the careers of a great number of musicians in cameroon. >> young musicians are so fresh. it takes time, but it's a question of will. and the