(RNS) — One song has stuck with Julio Cuellar Gonzales for practically his entire life. Among his first memories of church in the 1970s in Villa Serrano, a town in the Bolivian region of Chuquisaca, Cuellar remembers singing a specific version of the Our Father.

At the time, Cuellar thought it was written by a priest. He didn’t imagine that the beloved Our Father’s tune was actually written by Paul Simon for Simon & Garfunkel’s 1960s hit “The Sound of Silence.”

The words were different from the typical Our Father prayer. “Our Father, who art in those who truly love. May the kingdom that you promised us come soon to our hearts. The love that your son left us, may that love dwell in us,” began the song that Cuellar sang in Spanish. In the middle of the song, as a zampoña, a traditional Andean pan flute, played the melody, parishioners said the traditional Our Father together with the words from Matthew 6.