Complex sentence: This song was based on Andean folk songs and is possibly the best known Peruvian song because the melody was used by Simon and Garfunkel as their melody for "El Condor pasa (If I Could)", though the song has different lyrics.
Split into simpler sentences: This song was based on Andean folk songs and is possibly the best known Peruvian song. In part because of the worldwide success that the melody obtained when it was used by Simon and Garfunkel as their music for "El Cóndor Pasa (If I Could)", though the song has different lyrics.