The easy approach out of replying to this subject is to easily say “If you must ask, you may never know”. Equally with musical color, or timbre; the 19th century produced an important profusion of compositions, notably in the orchestral repertoire (e.g., works by Liszt and Berlioz) that exploited the unique sonorities of instruments; management of volume was, in itself, a wealthy source of color.
Furthermore, the very concept of listening as an attentive (and typically rigorous), severe, and vital activity of the music lover gained acceptance only slowly, following the inauguration of public concert events, and is still vigorously resisted.
He foresaw experimentation with a much richer repertoire of sounds, transcending musical instruments and drawing on no matter sources—certainly digital ones—are available for realizing probably the most normal orchestra.” A host of composers got down to fulfill this desideratum.
Do not submit works in numerous media simply to prove …