The re­al­ity of na­ture pre­sents it­self to us on dif­fer­ent lev­els of dif­fer­ent com­plex­ity, of vary­ing dif­fer­en­tia­tion, and of dif­fer­ent in­teg­rity: of dif­fer­ent ef­fec­tive­ness.

Mu­sic ex­pres­ses these lev­els of na­ture – sub­jec­tive as well as ob­jec­tive, in­di­vid­ual as well as so­cial or eco­logi­cal – on sepa­rate, dif­fer­ent lev­els of the mu­si­cal ex­pres­sion.

Cor­re­spond­ing to na­ture, mu­sic uses fields of vary­ing den­sity.

This means, mu­sic has lev­els of vary­ing dif­fer­en­tia­tion, vary­ing in­teg­rity, vary­ing com­plex­ity and vary­ing ef­fec­tive­ness.

These lev­els of mu­si­cal ex­pres­sion we call the “mu­si­cal force-fields,” and they in­clude the force-fields of the tones, of the mo­tifs, of the melo­dies, of the se­quences, and of the har­mony.