 Complete the following phrase:  Plaatjies started the percussion group Amampondo during the late 1970s. The group began with making music on the streets, but achieved international fame in the 1980s. The climax for the group was performing at the Wembley Stadium during the Nelson Mandela 70th Birthday Tribute. The stage was set for Amamondo to conquer the world, and they had already been booked for a world tour, but the 