Cuéllar's Plegaria (Prayer) is one of 12 string quartet pieces for intermediate strings included in Richard Young's Comprehensive String Pedagogy & Curriculum. A portion of the proceeds of sales for all CSPC music goes to support free music education at The People's Music School.

This gorgeous piece it is a deeply moving expression of Dr. Cuéllar’s affection and hope for the children of his native Colombia. He dedicated it to CSPC’s author and to the Botero Quartet, a group of Colombian teenagers (age 14-17) whose special talent and spirit encouraged high expectations.
 Because the notes are not difficult, players can focus on intonation, balance, and the matching of bow speeds and vibrati. However these technical considerations must ultimately serve this music’s spiritual qualities. It is worth remembering that a prayer does not need to be complicated so long as it is utterly sincere. Similarly, our music-making is often more compelling when we strive for clarity, purity, and simplicity – qualities that are at the core of sincerity.
 -Richard Young

Full program notes are included with the score. There are fingerings and bowings in all the string parts of every one of CSPC's pieces. These "cooked-in" technical solutions target the particular levels of the students. They are not just pragmatic but "musical."

Please note that due to a loss of source files, the PDF files of the music have been generated from scanned copies of printed parts. While every effort has been made to produce high quality parts, the limitations of scanning will result in some degradation of print quality.