The opus Etudes (2020-) will be comprised of 17 etudes divided into two collections: the Salvami etudes 1 4 7 9 11 14 17, where a slow, highly deductive approach is employed (conscious application of my musical theory, where wallpaper groups constitute the choice of groups) and the etudes 2 3, 5 6, 8, 10, 12 13, 15 16 where a fast, highly intuitive approach is used (consequence of my musical theory).