Various musical traditions have diverse attitudes to how and exactly where to help make modifications to the original source material, from fairly stringent, to those who demand improvisation or modification towards the music. A tradition's background and stories may also be handed on by ear

The examine of composition has customarily been dominated by examination of strategies and apply of Western classical music, however the definition of composition is wide enough to incorporate the generation of common music and common music tracks and instrumental items along with spontaneously