Simon was accused of breaking the boycott. His defense was artistic and logistical: he was collaborating with Black musicians, not the white apartheid regime. He argued that the boycott, while noble, was silencing the very voices it sought to empower—Black South Africans who needed a global stage.
If you do find the torrent, watch it with good headphones. Listen for the moment during "Diamonds on the Soles of Her Shoes" when the crowd drowns out the band. That is history.
His trumpet flares provided the "voice of the struggle."