« Contrasts » and « Colours » are two very short pieces for guitar, composed at Rafael Andia's request, in order to be included in a volume of his collection « la guitare contemporaine », to be published by « Éditions Musicales Transatlantiques » (EMT).
and puts together the names of twelve composers, all of them born between 1924 and 1949.
All the pages of music in this pedagogical book have in common the will of initiating young guitarists into a certain musical language typical of the second half of the XXth century, with notably the use of various symbols carefully listed so that the writing and the playing modes are well codified.