This track uses a sample from:
Simon & Garfunkel - If I Could (El Condor Pasa) (4'16'') 1971
And this theme was a cover from this other one:
El Cóndor Pasa (The Condor Goes by or Flies by) is a song from the zarzuela El Cóndor Pasa by the Peruvian composer Daniel Alomía Robles written in 1913 and based on traditional Andean folk tunes.