String Quartet Cello,Double Bass,String Quartet,Viola,Violin - Level 3 - Digital Download SKU: A0.1231725 Composed by Paul Brooks Horn. Arranged by Paul Brooks Horn. 21st Century,Chamber,Classical,Contemporary,Traditional. 9 pages. Paul Brooks Horn #827427. Published by Paul Brooks Horn (A0.1231725). Originally written for solo guitar, this piece has been adapted for string trio or quartet (with the optional contrabass). For the classical guitar, this piece would be considered an intermediate to lower advanced arrangement. I'm not sure how a string player would rate it. I can't imagine that it's much more than intermediate.