1. A system for generating, controlling or modifying sound elements, comprising: (a) one or more computers; and a (b) sound generating/controlling/modification utility (“sound processing utility”) linked to the one or more computers, or accessible by the one or more computers, the sound processing utility presenting, or initiating the presentation, on a display connected to the one or more computers, of one or more music composition/modification graphical user interfaces (“interface”) that enable one or more users of the system to graphically map on the interface one or more musical elements as parametric representations thereof, wherein the parametric representations are encoded with information elements corresponding to the musical elements, wherein the parametric representations, and the encoded information elements, can both be defined or modified by the user in the interface in a flexible manner so as to enable the user(s) to generate, control, or modify sound entities that achieve a broad range of musical possibilities, in an easy to use and responsive manner.